AnswersSNHS NV-Environmental ScienceLife and Earth's Crust

Plate Tectonics Answers

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Study the image of Earth’s interior.

Question illustration
A
how convection currents move in Earth’s interior
B
the location of heated material near Earth’s surface
C
where plates move as material cools in the outer core
D
why the densities of materials remain constant at different layers
2
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Study this image.

Question illustration
A
mountains
B
rift valleys
C
volcanoes
D
island chains
3

During the process of mountain building, earthquakes sometimes occur along continental-continental convergent boundaries. Which statement best describes the motion of the plates along these boundaries that causes the earthquakes?

A
The plates push apart from each other with no subduction.
B
Subduction occurs with the less-dense plate sinking below the other plate.
C
Subduction occurs with the more-dense plate sinking below the other plate.
D
The plates smash together with no subduction.
4

Study the image of a plate boundary.

Question illustration
A
mountain
B
rift valley
C
earthquake
D
island chain
5

Study the image about convection currents.

Question illustration
A
1
B
2
C
3
D
4
6

Into which layer of the Earth do plate boundaries extend?

A
outer core
B
lithosphere
C
lower mantle
D
asthenosphere
7

Study the map.Which plate borders the Philippine Plate?

Question illustration
A
African
B
Antarctic
C
Eurasian
D
North American
8

Which statement explains the relationship between the density of a material and its movement in Earth’s interior?

A
Cooler materials move from Earth’s mantle to the lithosphere.
B
Cooler materials are highly dense, causing them to sink to the outer core.
C
Warmer materials sink to the mantle because their density slowly decreases.
D
Warmer materials have a high density, causing them to rise to Earth’s surface.
9

Which statement describes the process of subduction?

A
Convection currents cause two plates to move away from each other.
B
A plate slides beneath another plate due to convection currents and gravity.
C
Materials are heated and transferred within Earth’s interior by density.
D
Heat cycles in the mantle cause plates to constantly move.
10

Study this image.

Question illustration
A
A volcano is forming.
B
Plates are converging.
C
A rift valley is forming.
D
A transform boundary is occurring.
11

Study the image.

Question illustration
A
A convergent boundary is formed.
B
Two plates are forming a divergent boundary.
C
Continental plates are sliding past each other.
D
Several mid-ocean ridges are formed on Earth’s surface.
12

In which two places do divergent boundaries occur?

A
land and oceans
B
oceans and volcanoes
C
volcanoes and lower mantle
D
lower mantle and land
13

Use the images to answer the question.Where would you most likely find transform boundaries on an earthquake distribution map?

Question illustration
A
where earthquakes are shallow and weak
B
where earthquakes are shallow and powerful
C
where earthquakes are deep and weak
D
where earthquakes are deep and powerful
14

Occasionally earthquakes occur as a result of collisions along oceanic-continental convergent boundaries. Where do these earthquakes most likely occur?

A
on land but close to oceans
B
inland, far from the coast
C
in the middle of the oceans
D
anywhere there are mountains
15

Sometimes earthquakes occur at a boundary between the Indian and Eurasian Plates. The collisions of these two continental plates formed the Himalayan mountain range.Based on this information, which type of boundary exists between the Indian and Eurasian Plates?

A
continental-continental convergent
B
continental-continental divergent
C
oceanic-continental divergent
D
oceanic-continental convergent

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