Tectonics And Layers Of Earth
Questions and Answers
- 1.
# 1 on the map is which of the following plates?
- A.
Eurasian
- B.
African
- C.
Pacific
- D.
North American
- E.
South American
Correct Answer
D. North AmericanExplanation
Based on the given information, the correct answer is North American. This is because the question asks which plate corresponds to location #1 on the map, and North American is the only option provided that matches this location.Rate this question:
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- 2.
# 2 on the map is which of the following plates?
- A.
Eurasian
- B.
African
- C.
Pacific
- D.
North American
- E.
South American
Correct Answer
B. AfricanExplanation
Based on the given information, we can determine that the plate labeled as #2 on the map corresponds to the African plate.Rate this question:
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- 3.
# 3 on the map is which of the following plates?
- A.
Eurasian
- B.
African
- C.
Pacific
- D.
North American
- E.
South American
Correct Answer
E. South AmericanExplanation
Based on the given information, the correct answer is South American. The question refers to a map with numbered locations, and the question asks for the plate corresponding to location number 3. Since South America is one of the options provided, it can be inferred that location number 3 on the map corresponds to the South American plate.Rate this question:
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- 4.
# 4 on the map is which of the following plates?
- A.
Eurasian
- B.
African
- C.
Pacific
- D.
Antarctic
- E.
South American
Correct Answer
C. PacificExplanation
Based on the given information, we can determine that the plate labeled as "4" on the map is the Pacific plate.Rate this question:
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- 5.
# 5 on the map is which of the following plates?
- A.
Eurasian
- B.
African
- C.
Pacific
- D.
Antarctic
- E.
South American
Correct Answer
A. EurasianExplanation
The Eurasian plate is the correct answer because it is the largest tectonic plate on Earth and covers a vast area that includes Europe, Asia, and parts of the Middle East. The other plates listed in the options (African, Pacific, Antarctic, South American) do not cover the same geographical area as the Eurasian plate.Rate this question:
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- 6.
# 6 on the map is which of the following plates?
- A.
Eurasian
- B.
African
- C.
Pacific
- D.
Antarctic
- E.
South American
Correct Answer
D. AntarcticExplanation
Based on the given question, we can determine that the question is asking about the plate number 6 on the map. The correct answer is Antarctic. This suggests that plate number 6 on the map corresponds to the Antarctic plate.Rate this question:
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- 7.
What is the most dense layer of the earth?
- A.
Crust
- B.
Mantle
- C.
Outer Core
- D.
Inner Core
Correct Answer
D. Inner CoreExplanation
The inner core is the most dense layer of the Earth. It is composed primarily of solid iron and nickel, and its high density is due to the immense pressure exerted on it by the layers above. The intense pressure causes the iron and nickel to be compressed into a solid state, despite the high temperatures. This solid inner core is estimated to have a density about 13 times greater than the density of water.Rate this question:
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- 8.
How do scientists know what the mantle and core are like?
- A.
Direct observation
- B.
Robotic equipment
- C.
On-site research trips
- D.
Seismic waves
Correct Answer
D. Seismic wavesExplanation
Scientists know what the mantle and core are like through the use of seismic waves. Seismic waves are generated by earthquakes and other sources, and they travel through the Earth's interior. By studying the behavior of these waves as they pass through different layers of the Earth, scientists can infer the properties of the mantle and core. This includes information about their composition, density, and temperature. Seismic waves provide valuable insights into the deep structure of the Earth, helping scientists understand its formation and dynamics.Rate this question:
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- 9.
The two pieces of information that you need to find density are: (Select 2 answers!!!!)
- A.
Mass
- B.
Weight
- C.
Volume
- D.
Density
- E.
Celsius
Correct Answer(s)
A. Mass
C. VolumeExplanation
To calculate density, you need two pieces of information: mass and volume. Mass refers to the amount of matter in an object, while volume refers to the amount of space the object occupies. By dividing the mass by the volume, you can determine the density of the object. The other options, such as weight and Celsius, are not directly related to finding density. Weight is the force exerted on an object due to gravity, and Celsius is a unit of temperature measurement.Rate this question:
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- 10.
This layer has mountains and oceans, and can undergo erosion:
- A.
Mantle
- B.
Crust
- C.
Outer core
- D.
Inner core
Correct Answer
B. CrustExplanation
The crust is the outermost layer of the Earth's surface. It is composed of solid rock and is divided into continental and oceanic crust. The crust contains mountains, which are formed by tectonic activity, and oceans, which are large bodies of water. Additionally, the crust can undergo erosion, which is the process of wearing away the surface through the action of wind, water, or ice. Overall, the characteristics of having mountains, oceans, and being subject to erosion align with the properties of the Earth's crust.Rate this question:
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- 11.
What are the three layers of the mantle in order of least dense to most dense?
- A.
Asthenosphere, lithosphere, mesosphere
- B.
Lithosphere, mesosphere, asthenosphere
- C.
Lithosphere, asthenosphere, mesosphere
- D.
Mesosphere. asthenosphere, lithosphere
Correct Answer
C. Lithosphere, asthenosphere, mesosphereExplanation
The correct answer is lithosphere, asthenosphere, mesosphere. The lithosphere is the outermost layer of the mantle and is composed of rigid rock plates. The asthenosphere is the middle layer and is semi-fluid, allowing for the movement of the lithospheric plates. The mesosphere is the deepest layer and is the most dense, with high pressure and temperature.Rate this question:
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- 12.
This is the most dense layer of the earth:
- A.
Mantle
- B.
Outer core
- C.
Crust
- D.
Inner core
Correct Answer
D. Inner coreExplanation
The inner core is the most dense layer of the Earth. It is a solid ball of iron and nickel, with temperatures reaching up to 5,500 degrees Celsius. The immense pressure at the center of the Earth causes the inner core to remain solid despite its high temperature. This dense layer is surrounded by the outer core, which is in a liquid state. The mantle, located above the outer core, is less dense than the inner core. Finally, the crust, which is the outermost layer of the Earth, is the least dense of all the layers.Rate this question:
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- 13.
What is a divergent boundary?
- A.
Creates fault lines
- B.
When magma rises between the plates, spread out, and cools to form new oceanic crust.
- C.
When the plates rise, and form volcanoes
Correct Answer
B. When magma rises between the plates, spread out, and cools to form new oceanic crust.Explanation
A divergent boundary is a type of tectonic plate boundary where two plates move away from each other. When magma rises between the plates, it spreads out and cools to form new oceanic crust. This process is known as seafloor spreading. As the magma cools, it solidifies and creates new crust, which pushes the existing crust away from the boundary. This results in the formation of new oceanic crust and the widening of the ocean basin.Rate this question:
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- 14.
True or False: a convergent boundary is where plates come together and collide to form a convergent plate boundary.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
A convergent boundary is indeed where plates come together and collide, forming a convergent plate boundary. This process occurs when two tectonic plates move towards each other, causing compression and forcing one plate to subduct beneath the other or creating a collision zone where the plates collide and uplift. This interaction can result in the formation of mountain ranges, volcanic activity, and the creation of deep-sea trenches. Therefore, the statement "True" accurately describes the nature of a convergent boundary.Rate this question:
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- 15.
Who Developed the Continental Theory in the 20th Century?
- A.
Alfred Wegener
- B.
George Cloney
- C.
Thomas Jefferson
Correct Answer
A. Alfred WegenerExplanation
Alfred Wegener developed the Continental Theory in the 20th century. His theory proposed that the continents were once joined together in a supercontinent called Pangaea and have since drifted apart. This theory revolutionized the understanding of Earth's geological history and the concept of plate tectonics. Wegener's work laid the foundation for modern geology and greatly contributed to our understanding of how the Earth's landmasses have evolved over time.Rate this question:
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- 16.
What was the name of the super-continent?
- A.
Pangeo
- B.
Pang
- C.
Pangea
Correct Answer
C. PangeaExplanation
Pangea was the name of the super-continent that existed millions of years ago. It was a landmass that incorporated all of the Earth's continents into one large landmass. The name "Pangea" was derived from Greek words meaning "all lands." This super-continent began to break apart around 175 million years ago, eventually leading to the formation of the continents as we know them today.Rate this question:
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- 17.
How many types of plate boundaries are there?
- A.
10
- B.
3
- C.
5
Correct Answer
B. 3Explanation
There are three types of plate boundaries: convergent, divergent, and transform. Convergent boundaries occur when two plates collide, causing one plate to be forced beneath the other. Divergent boundaries happen when two plates move away from each other, creating a gap that is filled with new crust. Transform boundaries occur when two plates slide past each other horizontally. Therefore, the correct answer is 3.Rate this question:
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- 18.
Which boundary occurs when two plates collide or come together?
- A.
Divergent Boundary
- B.
Convergent Boundary
- C.
Transform-Fault Boundary
Correct Answer
B. Convergent BoundaryExplanation
A convergent boundary occurs when two plates collide or come together. This collision can result in various geological features such as mountain ranges, volcanic activity, and the formation of trenches. The plates can either be oceanic or continental, and the type of convergence (oceanic-oceanic, oceanic-continental, or continental-continental) will determine the specific geologic processes that occur.Rate this question:
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- 19.
What boundary is sea-floor spreading applied?
- A.
Divergent Boundary
- B.
Transform-Fault Boundary
Correct Answer
A. Divergent BoundaryExplanation
Sea-floor spreading is a process that occurs at divergent boundaries, where tectonic plates are moving apart. As the plates separate, magma rises from the mantle and fills the gap, creating new oceanic crust. This process is responsible for the formation of mid-ocean ridges and the continuous expansion of the ocean floor. Therefore, sea-floor spreading is specifically applied to divergent boundaries. Transform-fault boundaries, on the other hand, involve plates sliding past each other horizontally, and do not involve the creation of new crust.Rate this question:
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- 20.
Earthquakes are very common along these boundaries.
- A.
Transform-Fault Boundary
- B.
Divergent Boundary
- C.
Plate Tectonics
Correct Answer
A. Transform-Fault BoundaryExplanation
Transform-fault boundaries occur where two tectonic plates slide past each other horizontally. These boundaries are characterized by frequent earthquakes due to the intense friction and pressure between the plates. As the plates move, they can become locked, causing stress to build up over time. When the stress is released, it results in an earthquake. Therefore, it is logical to conclude that earthquakes are very common along transform-fault boundaries.Rate this question:
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Mar 20, 2023Quiz Edited by
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Oct 01, 2014Quiz Created by
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