10. A difference between the oceanic crust and the continental crust is that the oceanic crust

B. more dense than the continental crust.

2. Which event most likely caused the formation of folded mountain ranges?

A. Tectonic plates on the earth pushed together.

13. Which best explains the movement of tectonic plates?

B. Move several centimeters a year from convection in Earth

17. Which best describes plate motion in san andreas fault between earthquakes?

B. Plate motion continues, and plate tension increases.

14. Submarine technology allowed the scientists to do which of these?

A. to explain the mechanism that caused continents movement

8. What causes the tectonic plates of Earth to continually move?

D. convection currents in the mantle

18. Technology used on submarines led to proof of continental movement. This helped scientists

to explain the mechanism that caused the continents to move

3. Which best describes why the same fossils were discovered in South America and Africa?

D. organisms once lived on Pangaea that later split

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Earthquakes and Vocanoes

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A Earthquake and Volcanoe review

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Questions 18

Answers

1
12. Which of the following has the greatest direct influence on movement of the lithosphere?
C. Earth’s core
B. the Moon
A. the Sun
D. Earth’s mantle
2
1. The solid layer of Earth that moves over a viscous layer is called the
D. atmosphere
C. asthenosphere
B. crust
A. core
3
5. What is most likely to form when seafloor spreading occurs at boundaries in the ocean.
B. subduction zones
A. strike-slip faults
C. mid-ocean ridges
C. lithosphere
4
10. A difference between the oceanic crust and the continental crust is that the oceanic crust
C. older than the continental crust.
B. more dense than the continental crust.
A. composed chiefly of sedimentary rocks.
D. less dense than the continental crust
5
2. Which event most likely caused the formation of folded mountain ranges?
C. Tectonic plates on the earth slid past each other
B. Tectonic plates on the earth pulled apart
D. Tectonic plates on the earth broke into small pieces
A. Tectonic plates on the earth pushed together.
6
9. Which geologic feature form when an oceanic plate is subducted beneath a continental plate?
B. mid-ocean ridge
D. Continental Rift Valley
A. trench
C. Continental Hot Spot
7
16. The picture is a model of the Earth's interior. Which evidence best supports this model?
samples of rocks from the layers
evaluations of seismic data
direct observations of the layers
explanations of the rock cycle
8
7. Which of the following is the most likely cause of earthquakes?
C. rotation of the core
B. crashing meteorites
D. magnetic force
A. shifting rock layers
9
6. If an earthquake occurs which best explains the direction the seismic waves will spread?
A. to the east
B. in all directions
D. in a straight path to the west
C. to the north and the south
10
15.. Which event takes place as the result of crustal movement along transform boundaries?
B. volcanic activity
D. trenches
A. earthquakes
C. mountain building
11
11. Which layers of Earth are mostly made of solid material?
A. inner core and outer core
C. crust and mantle
B. crust and inner core
D. mantle and outer core
12
13. Which best explains the movement of tectonic plates?
A. Move several miles a year from of convection in Earth.
C. Move several feet a year because of convection in Earth.
B. Move several centimeters a year from convection in Earth
D. Move several kilometers a year from convection in Earth.
13
17. Which best describes plate motion in san andreas fault between earthquakes?
B. Plate motion continues, and plate tension increases.
C. Plate motion stops, and only the mantle moves.
A. Plate motion continues, and plate tension decreases.
D. Plate motion reverses, it return to original positions.
14
4 Which best explains the cause of the geysers formed in Yellowstone National Park?
A. erosion
D. artesian springs
C. volcanic activity
B. earthquakes
15
14. Submarine technology allowed the scientists to do which of these?
B. to consider the glacial evidence as outdated
C. to explain the extinction of the dinosaurs
A. to explain the mechanism that caused continents movement
D. to consider it unlikely the continents were once together
16
8. What causes the tectonic plates of Earth to continually move?
D. convection currents in the mantle
A. rotation of the solid core
B. volcanic and seismic activity in the crust
C. strong winds and storms
17
18. Technology used on submarines led to proof of continental movement. This helped scientists
to consider it unlikely that continents were once together
to explain the extinction of the dinosaurs
to explain the mechanism that caused the continents to move
to consider the glacial evidence as outdated
18
3. Which best describes why the same fossils were discovered in South America and Africa?
C. Organisms became extinct by climate change on continents
D. organisms once lived on Pangaea that later split
B. Organisms separated by the formation of new mountains
A. These organisms migrated to these two continents

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