According to the definition of a mineral from the tutorials, minerals are naturally occurring substances with a definite chemical composition and a crystalline structure. Halite is considered officially to be minerals whereas others are not.
According to the definition of a mineral from the tutorials, minerals are naturally occurring substances with a definite chemical composition and a crystalline structure. Based on this definition, let's determine if each of the materials below would be considered officially to be minerals or not.
Glass: Glass is not considered to be a mineral because it does not have a crystalline structure.
Halite: Halite, also known as rock salt, is considered to be a mineral because it is naturally occurring, has a definite chemical composition (NaCl), and a crystalline structure.
Sugar: Sugar is not considered to be a mineral because it is not naturally occurring and does not have a crystalline structure.
Granite: Granite is not considered to be a mineral because it is a rock composed of several minerals, including quartz, feldspar, and mica. Each mineral within the rock has a definite chemical composition and a crystalline structure, but the rock as a whole does not have a single, distinct chemical composition or crystalline structure.
Ice: Ice is considered to be a mineral because it is naturally occurring, has a definite chemical composition (H2O), and a crystalline structure.
Plastic: Plastic is not considered to be a mineral because it is not naturally occurring and does not have a crystalline structure.
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4. What methods did Native Americans use to resist the missions? How successful were they? 5. How did elite Cherokee leaders adapt and change their economic, political, and social systems in order to deal with U.S. expansion and pressure? 6. What were the key differences between the role of women in Cherokee society as opposed to European society? What criticisms did Europeans make about Native peoples because of these gender differences?
Native Americans refer to the diverse indigenous peoples of the Americas who inhabited the land before the arrival of Europeans.
4. Native Americans used several methods to resist the missions, and these include:
a) Rejection of the religion and culture of the Spaniards
b) Native Americans refused to follow the rules of the mission and the demands of the friars.
c) Revolt against the mission system itself
d) The practice of traditional beliefs and customs in secret.
The effectiveness of these methods varied depending on the situation. Sometimes the resistance was successful and managed to keep the Europeans away for a while. In other instances, the Europeans crushed the resistance, leading to the removal or annihilation of the tribes in question.
5. The elite Cherokee leaders implemented several changes in their economic, political, and social systems to cope with U.S. expansion and pressure. Some of the changes included:
a) The establishment of written laws and the adoption of a constitution
b) The creation of schools to educate Cherokee children
c) The development of a national council to govern the Cherokee people
d) The establishment of a bicameral legislature
e) The development of a judicial system
These changes helped the Cherokee leaders to negotiate with the U.S. government and protect their land rights. However, despite these efforts, the U.S. government continued to put pressure on the Cherokee people, culminating in the Trail of Tears.
6. In Cherokee society, women held significant roles, unlike in European society, where women had little authority.
Women in Cherokee society could participate in religious ceremonies and hold political office. On the other hand, European society viewed women as inferior to men. European men criticized Native people because of the gender differences, leading them to believe that the Natives were less civilized.
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The distance between meridians is greatest A. at the poles. B. at the arctic/Antarctic circles. C. at the Tropics of Cancer/Capricorn. D. at the Equator. O E. everywhere, because they are parallel to each other. QUESTION 4 Earth's axial tilt is 23.5° measured from OA. the Plane of the Ecliptic B. a line that is perpendicular to the plane of the ecliptic C. the North Pole to the Equator D. the North Pole to the South Pole E. the North Pole to the Moon QUESTION 5 Which of the following possesses all of Earth's properties of area, shape, direction, proximity, and distance, correctly? OA. Mercator projection B. Alber's equal-area conic projection OC. Robinson projection D.A world globe E. Conformal projection
The correct answers are:
4. B. a line that is perpendicular to the plane of the ecliptic. Earth's axial tilt is measured from a line that is perpendicular to the plane of the ecliptic. This tilt is responsible for the changing seasons on Earth.
5. D. A world globe. A world globe is the only representation that accurately preserves all of Earth's properties of area, shape, direction, proximity, and distance. Other map projections may distort one or more of these properties to some extent.
In Sed rocks, what type of ripple marks indicate an ancient
tidal environment?
A. Symmetrical
B. Asymmetrical
Asymmetrical ripple marks indicate an ancient tidal environment in Sed rocks.
What are sed or sedimentary rocks? Sed or sedimentary rocks are rocks that are created by the accumulation or deposition of mineral or organic particles on the Earth's surface. They are commonly found in areas such as water bodies, deserts, and other areas where sedimentation is possible. Sedimentary rocks are classified into three types based on their formation: clastic, chemical, and organic. Clastic rocks are formed from the accumulation of rock fragments or sediments that have been weathered and eroded from a preexisting rock or mineral. Chemical rocks are formed by precipitation of dissolved minerals from solution. Organic rocks are formed from the accumulation of organic debris or remains of plants or animals.
What are ripple marks? Ripple marks are small ridges or undulations on the surface of a sedimentary rock, formed by the action of wind, water, or other natural forces. They are a common feature of sedimentary rocks and can provide important clues about the conditions under which the rock was formed.
What are tidal environments? Tidal environments are areas where the sea level changes periodically due to the gravitational pull of the Moon and the Sun. Tidal environments are commonly found in coastal areas and can have a significant impact on the formation of sedimentary rocks. Sedimentary rocks that are formed in tidal environments can contain distinctive features, such as ripple marks, that can provide important clues about the environment in which they were formed.
What type of ripple marks indicate an ancient tidal environment? Asymmetrical ripple marks indicate an ancient tidal environment in Sed rocks. Asymmetrical ripple marks are formed by the back-and-forth movement of water in a tidal environment. These marks are typically elongated and have a steeper slope on one side than the other, reflecting the direction of water movement. Symmetrical ripple marks are formed by the unidirectional flow of water, such as in a river or stream, and do not indicate a tidal environment.
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In Earth's history, the location of magnetic north has changed over time. a) True b) False Question 8 (5 points) Which of the following is a hot spot with an underlying mantle plume? a) The Hawaiian Islands b) Yellowstone c) The East African Rift System (EARS) d) All of these
Answer:
True, in Earths history, the location of magnetic north has changed over time.
Which of the following is a hot spot with an underlying mantle plume?
Answer: D. All of these.
Explanation:
Hope this helps!
In Earth's history, the location of magnetic north has changed over time, the given statement is true because the magnetic north is not constant. The following is a hot spot with an underlying mantle plume is a. all of these
The fact that the compass points do not always align with the geographical North Pole. Scientists now believe that the Earth's magnetic field is generated by fluid movements in the Earth's core. The planet's magnetic field may fluctuate over time as a result of such movements. The magnetic poles are the locations where the field is most intense. The magnetic north and south poles have changed places many times over the course of Earth's history due to fluctuations in the planet's magnetic field.
A mantle plume is a hypothetical thermal abnormality in Earth's mantle that drives volcanic activity and the creation of islands. The Hawaiian Islands, Yellowstone, and the East African Rift System (EARS) are examples of hotspots. A hotspot occurs where magma rises from the mantle to the surface of the Earth, forming a volcanic peak. So therefore the correct answer is d. all of these a hot spot with an underlying mantle plume.
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As a deep-water gravity wave approaches the shore, which of the following is true
Choice 1 of 5: the period increases due to bottom drag; however, the speed stays constant.
Choice 2 of 5: the sloped ocean bottom makes individual water parcels move in circles.
Choice 3 of 5: the wave amplitude increases due to capillary restoring forces
.Choice 4 of 5: the speed decreases due to bottom drag; however, the wave period stays constant.
Choice 5 of 5: the wave amplitude decreases due to bottom drag while the wave period increases.
The correct answer is Choice 4 of 5. As a deep-water gravity wave approaches the shore, the speed decreases due to bottom drag; however, the wave period stays constant. This statement is true.
Waves are caused by disturbances such as winds, gravitational attraction, or movement of the seabed. The water moves in a circular motion, returning to its original position after a complete rotation, as the wave progresses forward. When a deep-water gravity wave approaches the shore, it encounters the continental shelf, where it starts to feel the effect of bottom friction. As a result, the speed of the wave reduces due to the bottom drag. However, the wave period stays constant.Wave period is the time taken by two consecutive crests to pass through a stationary point. The wave speed, on the other hand, is the distance traveled by a wave per unit time. These two properties are closely related, such that the wave speed is given by the wave period multiplied by the wavelength. When the wave speed decreases due to bottom drag, it means the wavelength has reduced too. But the wave period does not change as it is a fundamental property of the wave.
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If a material is determined to have 42% Fines, 26% Sand, and 32% Gravel with a Liquid Limit of 40 and a Plasticity Index of 9, the Group Symbol would be and the Group Name would be Question 2 10 pts If a material is determined to have 32% Fines, 42% Sand, and 26% Gravel with a Liquid Limit of 23 and a Plasticity Index of 5 , the Group symbol would be and the group name would be Question 3 10 pts Given 77% Fines, 13\% Sand, 10% Gravel, Liquid Limit of 25 and PI of 6 , the Group Symbol would be and the Group Name would be
1. For the sample of the material determined to have 42% Fines, 26% Sand, and 32% Gravel with a Liquid Limit of 40 and a Plasticity Index of 9, the Group Symbol would be A-2-4 and the Group Name would be Clayey Silt.
2. For the sample of the material determined to have 32% Fines, 42% Sand, and 26% Gravel with a Liquid Limit of 23 and a Plasticity Index of 5, the Group Symbol would be A-3 and the Group Name would be Poorly Graded Sand.
3. For the given sample of 77% Fines, 13% Sand, 10% Gravel, Liquid Limit of 25, and PI of 6, the Group Symbol would be A-6 and the Group Name would be Clayey Silt.
So, the Group Symbol and Group Name for the given soil samples are as follows: For the sample of the material determined to have 42% Fines, 26% Sand, and 32% Gravel with a Liquid Limit of 40 and a Plasticity Index of 9, the Group Symbol would be A-2-4 and the Group Name would be Clayey Silt.
For the sample of the material determined to have 32% Fines, 42% Sand, and 26% Gravel with a Liquid Limit of 23 and a Plasticity Index of 5, the Group Symbol would be A-3 and the Group Name would be Poorly Graded Sand. For the given sample of 77% Fines, 13% Sand, 10% Gravel, Liquid Limit of 25, and PI of 6, the Group Symbol would be A-6 and the Group Name would be Clayey Silt.
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You are at 10°N and 30°E: you move to a new location that is 25° south and 40° west of your present location. What is your new latitudinal/longitudinal position? 4. You are at 20°S and 165°E; you move to a new location that is 45° north and 50° east from your present location. What is your new latitudinal/longitudinal position?
Your new latitudinal/longitudinal position is 15°s and 350°w.2.
1. starting at 10°n and 30°e, if you move 25° south and 40° west, you can calculate your new latitudinal and longitudinal position as follows:
latitude: 10°n - 25° = -15° (or 15°s)
longitude: 30°e - 40° = -10° (or 350°w) starting at 20°s and 165°e, if you move 45° north and 50° east, you can calculate your new latitudinal and longitudinal position as follows:
latitude: 20°s + 45° = 25°n
longitude: 165°e + 50° = 215°e
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What metamorphic process would most likely be associated with differential stress? a) Protolith b) Plastic Deformation c) Phase Change d) Metamorphic Reaction Question 2 (5 points) Recrystallization involves changing the chemical make-up of the rock. a) True b) False Which of the following statements is true about dynamic metamorphism (select all that apply)? Select 2 correct answer(s) a) It is characterized by high pressure b) It is characterized by low pressure c) It is associated with meteorite impacts d) It is associated with shearing along faults Gneiss is a metamorphic rock type associated with: a) Low temperature, low pressure conditions b) Low temperature, high pressure conditions c) High temperature, low pressure conditions d) High temperature, high pressure conditions Which of the following best describes the protolith of an amphibolite? a) Granite b) Shale c) Slate d) Basalt Question 6 (5 points) Metamorphism due to contact with or proximity to an igneous intrusion is called: a) Contact b) Hydrothermal c) Dynamic d) Regional Specific minerals that can only form under certain pressure and temperature conditions are refered to as: a) Migmatises b) Porphyroblastic Minerals c) Index Minerals d) Contour Minerals Question 8 (5 points) In contact metamorphism, the closest rock to the igneous intrusion would experience the most intense metamorphism. a) True b) False Mountain belts are dominated by which type of metamorphism? a) Contact b) Regional c) Dynamic d) None of these Question 10 (5 points) Contact metamorphism is pressure-dominated. a) True b) False
1) Plastic deformation is the type of metamorphism that is related with differential stress the most likely out of all the possibilities. 2) False. The chemical makeup of the rock does not change during the recrystallization process; rather, the crystal structure of the rock is altered.
1) The most likely metamorphic process that would be associated with differential stress is plastic deformation.
2) False. Recrystallization involves changing the crystal structure of the rock, not the chemical composition.
3) It is characterized by high pressure and is associated with shearing along faults.
4) Gneiss is a metamorphic rock type associated with high temperature, high pressure conditions.
5) The protolith of an amphibolite is basalt.
6) Metamorphism due to contact with or proximity to an igneous intrusion is called contact metamorphism.
7) Specific minerals that can only form under certain pressure and temperature conditions are referred to as index minerals.
8) True. In contact metamorphism, the closest rock to the igneous intrusion would experience the most intense metamorphism.
9) Regional metamorphism dominates mountain belts.
10) False. Contact metamorphism is temperature-dominated, not pressure-dominated.
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The planets in our Solar System have eccentricities that are*
mcp
all close to 1.
all close to 0, with Mercury being somewhat of an exception.
all close to 0, with Venus being somewhat of an exception.
all very different.
The planets in our Solar System have eccentricities that are all close to 0, with Mercury being somewhat of an exception with a slightly higher eccentricity.
The correct option is (b).
Eccentricity refers to the measure of how elliptical an orbit is, with a value of 0 representing a perfectly circular orbit and a value close to 1 indicating a highly elongated orbit. In our Solar System, the planets have nearly circular orbits, meaning their eccentricities are close to 0. However, Mercury has a slightly higher eccentricity compared to other planets, making it somewhat of an exception with a more elongated orbit.
So, the correct answer is (b) all close to 0, with Mercury being somewhat of an exception.
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Now Lester needs to calibrate his planter to seed his corn crop. He wants a final plant population of 22,000 plants/A and the germination rate on the bag is listed as 90%. How many seeds/it should his planter be dropping?
Lester's planter should be dropping approximately 24,445 seeds per acre to achieve a final plant population of 22,000 plants with a 90% germination rate.
To calculate how many seeds Lester's planter should be dropping, we need to account for the germination rate and the desired final plant population.
First, let's calculate the number of seeds needed to achieve a final plant population of 22,000 plants per acre.
Number of seeds needed = Final plant population / Germination rate
Number of seeds needed = 22,000 / 0.90
Number of seeds needed = 24,444.44
Since we can't have a fraction of a seed, Lester would need to round up the number of seeds to ensure he reaches or exceeds the desired plant population. Therefore, Lester's planter should be dropping approximately 24,445 seeds per acre.
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