Plate Tectonics Answers

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1
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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.
2
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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
3

Into which layer of the Earth do plate boundaries extend?

A
outer core
B
lithosphere
C
lower mantle
D
asthenosphere
4

Study this map of the world.

Question illustration
A
Indo-Australian
B
African
C
Pacific
D
Eurasian
5

Study the image.

Question illustration
A
does not occur in oceans
B
may form rift valleys
C
is a type of convergent boundary
D
is a region where earthquakes occur
6

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
7

Study the image of a plate boundary.

Question illustration
A
mountain
B
rift valley
C
earthquake
D
island chain
8

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.
10

Use the earthquake distribution map and what you know about boundaries to answer the question.Studies have shown that there is a relationship between the type and location of boundaries and the distribution and depth of earthquakes along or near these boundaries. Many earthquakes, shown in the map as wide bands, occur along convergent areas. These areas experience varying depths of earthquakes.Where would oceanic-oceanic convergence most likely occur?

Question illustration
A
Nazca plate converging with the South America plate, forming the Andes mountains
B
Philippine plate converging with the Pacific plate, forming Mariana Islands in the Pacific Ocean
C
Juan de Fuca converging with the North American plate, forming the Cascade mountains
D
North America Plate converging with the Eurasian Plate, forming a mid-ocean ridge

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