The rotation of the planets is similar to the rotation of the spinning nebula that formed the protoplanets.
What are planets and how were they formed?A planet is a celestial body that orbits a star and has sufficient mass to maintain its structure in a nearly round shape.
The development of a planet begins with a spinning cloud of dust, ice, and gas that swirls around a newborn star, according to prevailing theories.
The residual dust forms planetesimals, which combine to form planets. Because of the laws of physics, the planets spin as they orbit, just as the Earth rotates on its axis as it orbits the sun in a year.
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where is a earthquake damage generally the greatest
a. california
b. alaska
c. in the rockies
where are the oldest rock earthquakes locates
a. adjacent to oceanic ridges
b. adjacent to oceanic trenches
c. adjacent to transform boundaries
where are the oldest rock on the Atlantic seafloor located
a. trenches
b. mid ocean ridges.
c.along coastlines
California is a earthquake damage generally the greatest. Adjacent to oceanic trenches are the oldest rock earthquakes locates. Mid ocean ridges are the oldest rock on the Atlantic seafloor located. Therefore, the correct options for 1, 2 and 3 are A, B and B respectively.
Due to its location along the San Andreas Fault, California is famous for some of the most severe earthquake damage. The state has a history of devastating earthquakes and is prone to frequent seismic activities.
Oceanic trenches are often found close to ancient rock earthquakes. When one tectonic plate subducts beneath another, it creates these trenches as a result of extreme stress and strain that can result in earthquakes.
Mid-ocean ridges are home to the oldest rocks on the Atlantic sea floor. As tectonic plates move apart along these ridges, magma rises to the surface and forms new crust. When the crust solidifies and cools, it becomes the oldest rock on the ocean floor.
Therefore, the correct options for 1, 2 and 3 are A, B and B respectively.
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Why don't astronomers just measure the absolute magnitudes of every object in the sky instead of having to deal with the difference between apparent magnitude & absolute magnitude? Absolute magnitude measurements require images taken from a distance of 10 pc away from the object in question and we don't have the technology to do that right now. Trick question - apparent magnitude & absolute magnitude are the same thing, but you need to convert between the scales. Apparent magnitude was measured by Hipparchus, so we don't use it anymore. Absolute magnitude can only be determined when the distance to the object is known. (Since the apparent magnitude is easy to measure, it's just how the object looks in Earth's sky, the distance is the main problem). Actually, astronomers only use apparent magnitude because it puts everything from the perspective of Earth.
The correct statement is that absolute magnitude and apparent magnitude are not the same thing. They are two different measurements used in astronomy to describe the brightness of celestial objects. Here's an explanation to clarify the differences:
Apparent Magnitude:The brightness of an object as seen from Earth is expressed in terms of apparent magnitude. Based on the object's real brightness and distance from us, it is calculated. A logarithmic scale is used for apparent magnitude, with smaller values denoting brighter objects.
Absolute Magnitude: Absolute magnitude is a measure of the intrinsic brightness of an object, regardless of its distance from Earth.
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Orthoclase feldspar (also called potassium feldspar) crystals in a granite sample were analyzed and found to contain 1500 atoms of parent element 40K and 4500 atoms of daughter 40 Ar. The half-life of this isotope system is 1.3 billion years. How many atoms of the parent element were present when the orthoclase crystals first formed? QUESTION 21 Orthoclase feldspar (also called potassium feldspar) crystals in a granite sample were analyzed and found to contain 1500 atoms of parent element 40K and 4500 atoms of daughter 40 Ar. What percentage of the parent atoms % (just type in the number) remains? QUESTION 22 Orthoclase feldspar (also called potassium feldspar) crystals in a granite sample were analyzed and found to contain 1500 atoms of parent element 40K and 4500 atoms of daughter 40 Ar. The half-life of this isotope system is 1.3 billion years. How many half-lives have elapsed?
The number of parent atoms when the orthoclase crystals first formed is 1500. The percentage of the parent atoms that remains is 66.67 %. 10 half-lives have elapsed.
Let the number of parent atoms at the time of formation = x. So, the number of daughter atoms at the time of formation will be = 0.
At present (after decay), the number of parent atoms = 1500, and the number of daughter atoms = 4500.
Therefore,x + 0 = 1500 (Parent atoms cannot be negative)
⇒ x = 1500
Hence, the number of parent atoms when the orthoclase crystals first formed is 1500.
At present, the number of parent atoms = 1500.
So, the number of atoms that have decayed = the Total number of parent atoms at the time of formation - The number of parent atoms at present.
= Total number of parent atoms at the time of formation - 1500
= Total number of parent atoms at the time of formation - (1/3) × Total number of parent atoms at the time of formation.
= (2/3) × Total number of parent atoms at the time of formation.
Therefore, the percentage of the parent atoms that remains
= [Number of parent atoms that remain / Total number of parent atoms at the time of formation] × 100
= [(2/3) × x / x] × 100
= 66.67 % (approx.)
Hence, the percentage of the parent atoms that remains is 66.67%.
The half-life of this isotope system is 1.3 billion years. We know that, after one half-life the number of parent atoms becomes half.
Therefore, after two half-lives, the number of parent atoms becomes (1/2) × (1/2) = (1/4), and so on...
Let us see, how many times (n) we can divide the total number of parent atoms at the time of formation by 2 to get the number of parent atoms at present.
x × (1/2)ⁿ = 1500
We can solve this by taking logarithms.
log (x) + n × log (1/2)
= log (1500)log (x) + n × (-0.301)
= 3.176log (x) - 0.301n = 3.176
We can solve these two simultaneous equations to get the value of n.
We know that the total number of atoms of a radioactive element remains constant.
So,x + 4500 = x × (1 + 1)⇒ x = 4500.
So, from the above equation,
3.176 - 0.301n
= log (4500)n = 9.9 (approx.)
So, 10 half-lives have elapsed.
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Chapter 19 practices.
1. The study of early life on planet Earth involves the sciences of ____ and _____. Following the _____ that formed the universe, asteroids began to orbit our sun approximately _____ years ago. Earth appeared roughly _____ years ago. This early Earth likely had little to no oxygen, based on the absence of ____ in Earth's most ancient rocks.
2. ____ may have delivered the building blocks of life from space to Earth. Miller and Urey's experiment replicated the formation of these under conditions similar to those on early Earth.
3. Location where concentration of organic monomers may have occurred, allowing for polymerization. Hypothesis proposing that life began at deep-sea thermal vents. Ancestors of cells.
4. The earliest proposed fossil cells come from Canadian rocks that are about ____ years old. They contain tubes and filaments that are similar to those formed by cells near modern _____. The most widespread evidence of early life comes from fossil ____. Other rocks include fossils that show the presence of _____ which suggests that they are metabolically similar to modern _____.
1. The study of early life on planet Earth involves the sciences of geology and paleontology.
Following the Big Bang that formed the universe, asteroids began to orbit our sun approximately 4.6 billion years ago. Earth appeared roughly 4.5 billion years ago.
This early Earth likely had little to no oxygen, based on the absence of oxygen in Earth's most ancient rocks.
2. Meteorites may have delivered the building blocks of life from space to Earth. Miller and Urey's experiment replicated the formation of these under conditions similar to those on early Earth.
3. Hydrothermal vents are the location where the concentration of organic monomers may have occurred, allowing for polymerization. The deep-sea hot spring hypothesis proposes that life began at deep-sea thermal vents. Protocells are the ancestors of cells.
4. The earliest proposed fossil cells come from Canadian rocks that are about 3.8 billion years old.
They contain tubes and filaments that are similar to those formed by cells near modern hot springs. The most widespread evidence of early life comes from fossil stromatolites.
Other rocks include fossils that show the presence of carbon isotopes which suggests they are metabolically similar to modern photosynthetic bacteria.
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What is an example of caldera eruption (read all)?
a. more than one answer is correct
b. Mt. St. Helens
c. Yellowstone
d. Crater Lake
Is lava a great risk from a volcano?
a. No
b. yes
c. only to marine life on the ocean floor
d. only Hawaiian basalt
What typically is a more dangerous hot spot volcanic situation?
a. A mantle plume under an ocean plate
b. A mantle plume under a continent
Hawaii was form by action of a _____________
a. shatter ridge
b. divergent plate boundary
c. rift zone
d. mantle plume
1. More than one response is right. in this way, choice (A) is precise.
2. Indeed volcano is an incredible gamble from a well of lava.
3. A mantle crest under a mainland is a more hazardous problem area volcanic circumstance. Accordingly, choice (B) is exact.
4. Hawaii was structure by activity of a Mantle tuft. Thusly, choice (D) is exact.
1. The emission of Mount St. Helens in 1980 is an illustration of a caldera-shaping ejection. Yellowstone Public Park is home to one of the world's biggest volcanic calderas. Cavity Lake in Oregon, US, is a staggering illustration of a caldera framed by volcanic movement.
2. Magma represents a critical gamble during volcano ejections. Liquid stone can arrive at incredibly high temperatures, ordinarily going from 700 to 1,200 degrees Celsius (1,300 to 2,200 degrees Fahrenheit). At the point when magma streams, it can move gradually or quickly, contingent upon its thickness, and it can cover and annihilate anything in its way.
3. A mantle tuft under a mainland ordinarily represents a more hazardous problem area volcanic circumstance contrasted with a mantle crest under a sea plate.
4. Hawaii was framed by the activity of a mantle tuft. A mantle tuft is a segment of hot, upwelling mantle material that ascents from profound inside the World's mantle. As the mantle tuft arrives at the World's surface, it produces volcanic action, prompting the development of volcanic islands or island chains.
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How does the relationship between the zone of accumulation and the zone of wastage alter the movement of a glacier?
2- What are the three types of mass wasting and how do they differ?
3- How does a stream's gradient vary along its length?
4- What is erosion?
1. The relationship between the zone of wastage. 2. Glaciers move due to the internal deformation. 3. Mass wasting refers to the downhill movement of rock. 4. Erosion is the process by which the Earth's surface.
1. The zone of accumulation refers to the area where snowfall exceeds melting, resulting in the accumulation of snow and ice. The zone of wastage, on the other hand, experiences more melting than snowfall, leading to the loss of ice through melting, sublimation, and calving.
2. Glaciers move due to the internal deformation of ice and the downslope flow of ice under gravity. In the zone of accumulation, where there is net accumulation of ice, the excess weight causes compression and deformation of the ice, leading to ice movement.
3. Mass wasting refers to the downhill movement of rock, soil, or debris under the influence of gravity.
4. Erosion is the process by which the Earth's surface is gradually worn away or removed through the action of various forces, such as water, wind, ice, or gravity. It involves the detachment, transportation, and deposition of weathered material, including rock particles, soil, and sediment. Erosion can occur through different mechanisms. For instance, water erosion can be caused by the force of running water that dislodges and carries away sediment.
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LO #28 While at the beach, you put a small toy boat in the ocean. After an hour, you notice that the boat has drifted down the beach. Explain why this happens.
When a small toy boat is placed in the ocean, it will begin to move along with the flow of the water.
The current in the ocean is created by a variety of forces, including wind, tides, and the rotation of the Earth. The boat will move along with the flow of the water, which can cause it to drift away from its original position.
One of the main causes of the drift of the toy boat is the wind. The wind can cause the surface of the water to move, which creates a current. This current can push the toy boat along in a certain direction.
Depending on the strength and direction of the wind, the boat may move quite a distance away from its original location.
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Which process will NOT cause rocks to melt? Decompression melting beneath continental rift Flux melting in subduction zone Heat transfer within continental crust Heat transfer within astenosphere
Among the given options, the process that will NOT cause rocks to melt is Decompression melting beneath continental rift. Thus, the correct option is: A. Decompression melting beneath continental rift.
Decompression melting is a process that is associated with the Earth's mantle. Decompression melting takes place when rocks that are under pressure (usually in the mantle of the Earth) are uplifted and the pressure that was previously being exerted on the rocks is reduced.
This results in a reduction of the melting point of the rocks, causing them to melt. Thus, the correct option is: A. Decompression melting beneath continental rift
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You are on a project where they have just dug a test pit to observe the shallow subsurface and need to use the disturbed soil for classification. The soil appears to be coarse-grained, with more than 50% of the particles being subrounded and the same size of roughly 0.25". The remaining portion of the soil appears to be composed of smaller, visible particles that exhibit no plasticity. When washed with a squirt bottle, the soil took only one wash to separate the fines. What is the most likely classification of this soil? Briefly explain your answer
The soil appears to be coarse-grained, with more than 50% of the particles being subrounded and the same size of roughly 0.25".
The remaining portion of the soil appears to be composed of smaller, visible particles that exhibit no plasticity. When washed with a squirt bottle, the soil took only one wash to separate the fines.
The Unified Soil Classification System (USCS) and the American Association of State Highway and Transportation Officials (AASHTO) are the two soil classification methods used in the United States.
The USCS is used to classify soils based on their grain size, plasticity, and organic content.
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15. What composition is 90% of the lava erupted on Earth? Is it very dangerous/explosive? (both parts need to be true, but
you only really need to look up or know the first part).
a. Basaltic, no c. Ultramafic, yes
b. Rhyolite, no d. Andesitic, no
16. Is lava a great risk from a volcano?
a. No c. only to marine life on the ocean floor
b. yes d. only Hawaiian basalt
17. What happens when an eruption melts the ice cap and glacier on a volcano?
a. Aa lava c. a lahar
b. pillow lava d. a pyroclastic flood
18. What is the significant danger from gases and ash expelled during a volcanic eruption from a Composite or Caldera
volcanic eruption, to the global atmosphere and environment?
a. Water vapor destruction c. Blocking heat or light hitting earth, global
cooling
b. Carbon dioxide creating global warming d. Argon poisoning
35. What is an example of mass wasting?
a. The Ring of Fire c. Island and continental volcanic arcs
b. An ash fall such as the Huckleberry Ash d. The 1985 Colombian disaster
15. Basaltic lava composition is 90% of the lava erupted on Earth, and it is the least dangerous/explosive of the lava composition.
This is due to its low silica content and low viscosity which allows gas to escape easily, preventing the build-up of pressure that can result in explosive eruptions.
16. Yes, lava is a great risk from a volcano, as it can cause widespread destruction to buildings, homes, and infrastructure. It can also lead to loss of life, injury, and displacement of people living near the volcano.
17. When an eruption melts the ice cap and glacier on a volcano, it can lead to the formation of a lahar, which is a volcanic mudflow.
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Radiation fog: a. is more likely to occur on summer nights than on winter ones. b. never occurs when light breezes (under 5 miles an hour) are present. c. often occurs in river valleys and low-lying areas. d. is usually shallowest around sunrise.
c. often occurs in river valleys and low-lying areas.
Radiation fog is a type of fog that forms through the process of radiative cooling, where the Earth's surface loses heat at night, causing the air near the surface to cool and reach its dew point. This type of fog tends to occur in specific geographical features such as river valleys and low-lying areas.
Option a is incorrect because radiation fog can occur in both summer and winter. However, it is more common during the cooler seasons when temperature differences between the surface and the air are more significant.
Option b is incorrect because light breezes do not prevent the formation of radiation fog. In fact, calm conditions with minimal wind can promote the formation and persistence of radiation fog.
Option d is incorrect because radiation fog is usually thickest around sunrise, not shallowest. This is because the cooling of the Earth's surface is most pronounced during the night, leading to the formation of dense fog, which gradually dissipates as the sun rises and heats the surface.
Therefore, the correct option is c, as radiation fog is often observed in river valleys and low-lying areas.
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Calculate the average density of the Earth. Make sure the answer is in g/cm³.
rho = m/V two decimal places is sufficient, Sakai accepts a range
2.The average density of the rocks making up Earth’s crust is 2.7 – 3.0 g/cm³. Is this range greater than, less than, or equal to (includes) the average density of Earth?
To calculate the average density of the Earth, we need to divide its mass by its volume. It is calculated to be 5.52 g/cm³
The mass of the Earth is approximately 5.97 x 10²⁴ kilograms, and the volume is approximately 1.08321 x 10¹² cubic kilometers.
Mass of Earth = 5.97 x 10²⁴ kg = 5.97 x 10²⁷ g
Volume of Earth = 1.08321 x 10¹² km³ = 1.08321 x 10²⁷ cm³
We can calculate the average density using the formula:
Average Density = [tex]\frac{Mass}{Volume}[/tex]
Average Density = [tex]\frac{5.97 x 10^2^7}{1.08321 x 10^2^7}[/tex]= 5.52 g/cm³
The range of the average density of Earth's crust, which is 2.7 - 3.0 g/cm³, is less than the average density of the entire Earth.
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1) What are chondrites made from and why are they so important to our understanding of the earliest stages of our solar system?
2) Describe and explain the phenomena of meteor showers.
3) Meteors occurring when there are no meteor showers are called?
1. Meteorite chondrules, which are small, spherical grains composed of minerals such as olivine, pyroxene, and feldspar, make up most chondrite meteorites. Chondrites consist of chondrules as well as other substances including metals, chemical compounds and even trace amounts of water.
2. Meteor showers occur when Earth travels through the debris stream of asteroids or comets. High-speed debris particles that enter Earth's atmosphere heat up and produce meteors, also known as shooting stars or light streaks. The constellation from which the meteors appear to radiate gives the meteorites their names. They occur when Earth passes through the same debris stream at predictable periods each year.
3. Sporadic meteors are those that appear randomly without a meteor shower. No particular comet or asteroid debris stream is associated with sporadic meteors. They are sporadic events brought about by individual meteorites that each entered Earth's atmosphere independently. Sporadic meteors are not confined to certain times or places; They can happen at any moment. Sporadic meteors do not have a distinct radiant point or follow a regular pattern as do meteor showers.
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An estuary in which salinities tend to be higher away from the
ocean entrance than near the ocean entrance is called a salt wedge
estuary.
True
False
True, an estuary in which salinities tend to be higher away from the ocean entrance than near the ocean entrance is called a salt wedge estuary.
An estuary is a place where freshwater from rivers mixes with saltwater from the sea and forms an estuary that is a unique environment for plant and animal life.There are four types of estuaries that have different characteristics and features, which include salt wedge estuaries, partially mixed estuaries, well-mixed estuaries, and fjord estuaries. Salt wedge estuaries are usually found in the areas where freshwater from the river enters the ocean.
The salinity of seawater is higher than freshwater, which makes it more dense, and it settles to the bottom of the estuary where it forms a salt wedge. As seawater comes in from the ocean, it pushes the saltwater wedge towards the land, where it becomes thicker and deeper.
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1. The transmission of energy from the sun to the earth is achieved through
Conduction
Radiation
Convection
All of the above
2.The earth’s emission temperature is much higher than its observed temperature due to the greenhouse
True or False
1. The transmission of energy from the sun to the earth is achieved through radiation. Therefore option 2 is correct.
2. The earth’s emission temperature is much higher than its observed temperature due to the greenhouse. This statement is false.
Radiation refers to the transfer of energy through electromagnetic waves. In the case of the sun, it emits energy in the form of electromagnetic radiation, particularly in the form of visible light and infrared radiation.
This energy travels through the vacuum of space and reaches the Earth without the need for a medium or direct contact.
The earth's emission temperature is not much higher than its observed temperature due to the greenhouse effect.
The greenhouse effect is a natural process that occurs in the earth's atmosphere, where certain gases, known as greenhouse gases (e.g., carbon dioxide, methane, water vapor), trap and re-radiate heat energy back to the earth's surface.
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You come across sediments that are moderately-poorly sorted. What can you conclude about the depositional environment of these sediments? Do you think that they were deposited by water, a glaciers, wind? What other information would you want to help you address these questions?
If the sediments are moderately-poorly sorted, it suggests that the depositional environment was turbulent. Turbulent evironments are most often caused by water, which means that the sediments were most likely deposited by water.
As a result, the sediment may have been deposited in a river, lake, or ocean. The other information that may be required to address these questions are as follows: Grain Size: The grain size of the sediment may provide additional clues about the depositional environment. For example, fine-grained sediment may suggest that it was deposited in a quiet or low-energy environment.
Coarse-grained sediment, on the other hand, may suggest a high-energy environment such as a fast-flowing river or a beach. Minerals: The minerals present in the sediment can also help identify the depositional environment. For example, the presence of mica or feldspar may suggest a mountainous region or a glacial deposit, while the presence of calcium carbonate may suggest a shallow, marine environment.
Sedimentary Structures: Sedimentary structures, such as cross-bedding, ripple marks, or mud cracks, may also be used to infer the depositional environment. Cross-bedding may suggest a river, beach, or dune environment, while ripple marks may suggest a shallow water or beach environment.
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If a student has severe cerebral palsy that affects or hinders his learning, he would likely qualify for special education under the eligibility category of ____
If a student has severe cerebral palsy that affects or hinders their learning, they may likely qualify for special education under the eligibility category of "Other Health Impairment" (OHI).
The Individuals with Disabilities Education Act (IDEA) in the United States provides a list of disability categories under which students can qualify for special education services. One of these categories is "Other Health Impairment."
Cerebral palsy is a neurological disorder that affects movement, muscle tone, and motor skills. It is caused by damage to the developing brain, typically before or during birth.
To determine eligibility, the student's Individualized Education Program (IEP) team, which includes parents, teachers, and other professionals, will assess the student's needs, abilities, and the impact of cerebral palsy on their learning.
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plete the follo by using 's law. You may calculator and graph Planck Law for Blackbodies to calculate temperature when given wavelength (and vice-v Blackbody Temperatures of the Electromagnetic Spectrum to identify the region of the elect where an object with the stated temperature emits most of its light. T (kelvins) max (angstroms) Case 1 2 3 4 5 8095 4380 3,670 5,800 7,880 Stars as Blackbodies 7896 3,580 4997 3678 6,000 EM Region Ultraviolet Infrared Visible Visible Ultraviolet V
The electromagnetic spectrum is the range of all forms of electromagnetic radiation. Blackbody radiation is emitted by an object at a particular temperature and is distributed over a wide range of wavelengths.
Planck's law gives the spectral density of the radiation emitted by a blackbody at a particular temperature for each wavelength. The blackbody temperature of the electromagnetic spectrum can be calculated from Planck's law and graphed to determine the region of the electromagnetic spectrum where an object at the given temperature emits the majority of its light.
Step1. The temperature (T) in Kelvin (K) is calculated using the following equation: T= b/λmax where b is the constant equal to 2.898x10^-3 mK and λmax is the wavelength of maximum intensity. The results are shown in the table below
Step2. Blackbody Temperatures of the Electromagnetic Spectrum to identify the region of the electromagnetic spectrum where an object with the stated temperature emits most of its light. Case Temperature (K) λmax (Å) EM Region 1 8095 4380 Ultraviolet 2 3,670 4997 Infrared 3 5,800 3678 Visible 4 7,880 6000 Visible 5 7896 3580 Ultraviolet.
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Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. Choose the one option that does not fit the pattern. o barrier island o beach face o berm o trough o longshore bar
The majority of the words/phrases listed are associated with coastal geography or related to a beach or shoreline.
Barrier island: It is a long, narrow island parallel to the mainland that helps protect the coast from sea waves and storms. Beach face: The sloping section of the beach that is directly influenced by sea wave action.Berm: Mound of sand or gravel found is found at the back of the beach, separating from coastal land.Trough: Low point or depression between sea waves.Long shore bar: A submerged or partially submerged sandbar parallel to the shoreline, formed by sea wave.The word that does not fit the pattern is "trough." While it is related to sea wave action, it is usually not associated with beach or shoreline features like the other options given.
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A. Read the USGS's The San Andreas Fault publication located at the following link (it is also included in the content section of Unit 3 on D2L Brightspace): http://pubs.usgs.gov/gip/earthq3/ B. Answer the following questions: 1. Which two plates act to form the San Andreas fault? 2. A strike-slip boundary mean that plates are moving in what direction, relative to one another? What is another name for this type of plate boundary? 3. In your own words, explain what processes occur to create "great earthquakes" like that experienced in San Francisco in 1906. 4. When is the San Andreas fault thought to have originated, and how much displacement has occurred since that time? 5. What is a "seismic gap"? 6. What are the three main steps mentioned in the article that can be done to defend people from earthquakes' hazards? 7. With all of the environmental hazards of some areas of California, why do you think people still want to live there? Think about topics covered previously in this class (i.e. climate, vegetation, etc.).
The San Andreas Fault is formed between the Pacific plate and the North American plate. A strike-slip boundary means that plates are moving in a horizontal direction, sliding past one another.
Another name for this type of plate boundary is a transform boundary. "Great earthquakes" like that experienced in San Francisco in 1906 occur due to sudden movements along faults. The force of the plates' movement against each other causes stress to build up along the fault.
When the stress is released suddenly, it results in a massive earthquake. The San Andreas Fault is thought to have originated about 30 million years ago. Since then, approximately 200 miles of displacement has occurred.
A seismic gap is an area along a fault where little to no earthquakes have occurred for a long period of time. This suggests that the fault is locked and could produce a significant earthquake in the future. The three main steps mentioned in the article that can be done to defend people from earthquakes' hazards are as follows: Identify seismic hazards and assess the risks, develop mitigation measures to reduce risks, and promote earthquake preparedness.
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True or false - Stanley Park is an example of a preserved wilderness that has latigely been unmodified by humans over the past 100 years. a) True. b) False
Stanley Park is an example of a preserved wilderness that has largely been unmodified by humans over the past 100 years is false. Therefore, the correct option is B.
The park has undergone significant modifications and human interventions over the years. Various changes have been made to the park's landscape and infrastructure, including the construction of roads, the removal and planting of tree species, the creation of pathways, the building of the Vancouver Aquarium, and the completion of the seawall, among other alterations.
Thus, the ideal selection is option B.
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The binary system shown above contains a white dwarf (on the left side) and an evolving post-main-sequence star (on the right side).
(a)
Once the evolving star fills its Roche lobe, mass is transferred. In which direction does this matter flow, and why?
Matter flows from the white dwarf to the evolving star because the evolving star is the more massive of the two stars.
Matter flows from the evolving star to the white dwarf because the white dwarf is the older of the two stars.
Matter flows from the evolving star to the white dwarf because it enters the white dwarf's Roche lobe.
Matter flows from the evolving star to the white dwarf because the white dwarf is the more massive of the two stars.
(b)
Suppose that the evolving star is the same size as our Sun at the start of the animation. The white dwarf, meanwhile, is only about as large as the Earth—even though it may have two-thirds or three-quarters as much mass as the evolving star!
Which one of the following expressions would best represent the ratio of the two stars' diameters? Note: The Sun's radius is about 696,000 km, or 6.96 ✕ 105 km, whereas the Earth's radius is about 6,380 km, or 6.38 ✕ 103 km.
6.96 ✕ 105 km
6.38 ✕ 103 km
≈ 10
6.96 ✕ 105 km
6.38 ✕ 103 km
≈ 109
6.96 ✕ 105 km
6.38 ✕ 103 km
2
≈ 11,900
6.96 ✕ 105 km
6.38 ✕ 103 km
3
≈ 1,300,000
(c)
If the evolving star is the same size as our Sun and represented as a tennis ball (7 cm diameter), which one of the following will best represent the white dwarf in a scale model? (Recall that 1 cm equals 10 mm, and that the star sizes in the animation are not to scale.)
sand grain (0.6 mm diameter)
apple seed (3 mm diameter)
marble (10 mm diameter)
golf ball (40 mm diameter)
(a) Matter flows from the evolving star to the white dwarf because it enters the white dwarf's Roche lobe.
The matter transfer occurs because the evolving star has expanded beyond its Roche lobe, which is the region around a star within which material is gravitationally bound to it.
(b) The best expression to represent the ratio of the two stars' diameters would be: 11,900
To determine this ratio, we divide the Sun's radius (6.96 ✕ 10^5 km) by the Earth's radius (6.38 × 10∧3 km), giving us approximately 109. Therefore, the ratio of the two stars' diameters is approximately 11,900.
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Lava flowing on the Earth's surface from a volcanic eruption can also be referred to as magma. a) True. b) False.
Lava and magma are not the same thing, although they are related. The key difference between the two lies in their location. Therefore this statement is false.
Magma refers to molten rock that is found beneath the Earth's surface. It is a mixture of molten rock, dissolved gases, and solid minerals.
Magma is typically generated in the Earth's mantle or in the lower portion of the crust through processes such as melting due to high temperatures or the addition of volatiles (such as water) that lower the melting point of rocks.
When magma reaches the Earth's surface through volcanic eruptions, it is then called lava. Lava is the molten rock that flows out of a volcano onto the Earth's surface or erupts into the air as pyroclastic material.
Lava can vary in composition, texture, and viscosity depending on the type of magma from which it originated.
So, while magma refers to molten rock beneath the surface, lava specifically refers to molten rock on the surface during a volcanic eruption.
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Talk about one universalizing religion AND one ethnic religion to compare and contrast, in detail. Your comparison should include at least three specific examples of geographic observations. Some items that you could consider discussing include: distribution, diffusion, origins, places of worship, etc.
Religion is a belief system that can be divided into two broad categories: universalizing and ethnic.
Universalizing religions are those that attempt to attract followers from all over the world, while ethnic religions are those that are specific to certain ethnic or national groups.
Hinduism and Christianity are two such examples of a universalizing religion and an ethnic religion. In this essay, I will compare and contrast these two religions in terms of distribution, diffusion, origins, and places of worship.
Hinduism is the oldest religion in the world, with over one billion followers.
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Name the countries at the following coordinates:
1. 63° N, 15° E ______________
2. 10° S, 75° W ______________
3. 18° S, 45° E ______________
4. 43° N, 11° E ______________
1. 63° N, 15° E: Sweden
2. 10° S, 75° W: Peru
3. 18° S, 45° E: Mozambique
4. 43° N, 11° E: Italy
At coordinates 63° N, 15° E, the country located is Sweden. Sweden is a Nordic country in Northern Europe, situated on the eastern part of the Scandinavian Peninsula.
The coordinates 10° S, 75° W correspond to Peru. Peru is a country located in western South America, known for its rich history, diverse landscapes, and ancient civilizations such as the Incas.
At coordinates 18° S, 45° E, the country is Mozambique. Mozambique is a country located in southeastern Africa, bordered by the Indian Ocean to the east.
The coordinates 43° N, 11° E point to Italy. Italy is a country in southern Europe, known for its historical cities, rich cultural heritage, and contributions to art, architecture, and cuisine.
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What does the presence of veristic portrait art of the
Romans say about Roman culture?
The presence of veristic portrait art of the Romans says that Roman culture highly valued realism and the depiction of naturalism in art.
Veristic portrait art is a type of portraiture that attempts to create a highly realistic depiction of the sitter by emphasizing the natural and sometimes unflattering features of their face and body. This style was popular in ancient Rome and was often used to depict important figures such as political leaders and wealthy citizens. What this reveals about Roman culture is that they valued realism in art, perhaps as a reflection of their focus on practicality and order in other areas of life.
Veristic portrait art also reflects the Roman emphasis on individuality, as each portrait attempts to capture the unique features and character of the sitter rather than simply idealizing them as a generic representation of their status. Overall, the presence of veristic portrait art of the Romans speaks to the value they placed on realism and individuality in their culture.
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If you are standing north of a smokestack and smoke from the stack is drifting over your head, the wind would be called a ____ wind. a) north b) south
If you are standing north of a smokestack and smoke from the stack is drifting over your head, the wind would be called a south wind. Option A.
A smokestack is an upright chimney used in factories to produce smoke that is driven by high temperatures. It produces smoke that is visible from a distance and is released into the air. If the wind is drifting smoke from a smokestack over your head, it's an indication of a south wind.
It is essential to note that the direction of the wind is the direction the wind is blowing from rather than the direction the wind is blowing to. In this case, since the smoke is blowing towards the north, it is an indication of a south wind. Therefore, the wind would be called a south wind. Therefore option A is correct.
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The best way to reduce flooding is to
A. restore wetlands along rivers.
B. build higher levees.
C. shift from earthen levees to concrete levees.
D. None of these will reduce flooding.
The best way to reduce flooding is to restore wetlands along rivers. Therefore, option A is correct.
Wetlands act as natural buffers and absorb excess water during heavy rainfall or flood events. They can store and slowly release water, helping to regulate and reduce the peak flow of floodwaters. They also provide additional benefits such as filtering pollutants, improving water quality, and providing habitat for various plant and animal species.
Restoring wetlands along rivers is the most effective way to reduce flooding as it addresses the root causes and provides multiple benefits for flood management and ecological health.
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Find the equation of the line that contains the points (0, 1) and (8, 5)
The equation of the line that passes through the points (0, 1) and (8, 5) is y = (1/2)x + 1.
To find the equation of a line that passes through two given points, we can use the point-slope form of a linear equation. The point-slope form is given by:
y - y₁ = m(x - x₁)
where (x₁, y₁) represents one of the given points, and m represents the slope of the line.
Let's calculate the slope (m) using the given points (0, 1) and (8, 5):
m = (y₂ - y₁) / (x₂ - x₁)
m = (5 - 1) / (8 - 0)
m = 4 / 8
m = 1/2
Now that we have the slope, we can choose one of the given points and substitute its coordinates and the slope into the point-slope form. Let's choose the point (0, 1):
y - 1 = (1/2)(x - 0)
Simplifying further:
y - 1 = (1/2)x
Now, we can rearrange the equation to the slope-intercept form, y = mx + b, where b represents the y-intercept:
y = (1/2)x + 1
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Describe the important factors for CO2 emissions
during WTW of the fuel (ethanol in this case)
Well-to-wheel (WTW) is the approach used to evaluate the energy consumption and greenhouse gas (GHG) emissions of different fuel types.
CO2 emissions are one of the main factors measured in WTW analysis of fuel, and the important factors for CO2 emissions during WTW of fuel (ethanol in this case) are described as follows:The production of ethanol and the origin of the feedstock (i.e., corn or sugarcane) have a significant impact on the CO2 emissions of ethanol. Corn is a high-carbon feedstock, while sugarcane is a low-carbon feedstock. Therefore, ethanol produced from corn emits more CO2 than ethanol produced from sugarcane. In addition, the production of ethanol requires energy for transportation and processing, which also contributes to the CO2 emissions associated with ethanol.
In terms of transportation, CO2 emissions from ethanol transportation are lower than those of gasoline because ethanol is transported mainly by pipeline, which is more efficient than transporting gasoline by truck. However, ethanol has a lower energy density than gasoline, which means that ethanol-powered vehicles have lower fuel economy and require more fuel to travel the same distance.
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