AnswersEarth and Space A 26-27Earth's Interior

Earth's Interior Answers

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1
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Study the diagram showing the range of temperature in the Earth’s layers.

Question illustration
A
The outer core is the hottest region.
B
The mantle is hotter than the outer core.
C
The continental crust is the coolest region.
D
The inner core is cooler than the lithosphere.
2
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Which statement describes how the mantle is similar to Earth’s oceanic crust?

A
It is composed mostly of basalt.
B
It consists primarily of molten rock.
C
It has varying degrees of thickness.
D
It is divided into two layers.
3

Which object can an S wave travel through?

A
air
B
magma
C
soil
D
water
4

Study the image of a seismic graph.About how far does the S wave travel through Earth in 13 minutes?

Question illustration
A
2,000 km
B
4,000 km
C
6,000 km
D
8,000 km
5

Study the table about Earth’s interior.Which conclusion is supported by information in the table?

Question illustration
A
The mantle is thinner than the crust.
B
The core is the thickest of Earth’s layers.
C
The inner core is thicker than the outer core.
D
The mantle is the thinnest of Earth’s layers.
6

Which statement describes a characteristic of the asthenosphere?

A
Temperatures are cool.
B
Consistency is solid.
C
Thickness is less than crust.
D
Pressure is higher than crust.
7

Why is Earth's outer core hotter than Earth’s oceanic crust?

A
Earth’s oceanic crust is denser than Earth’s outer core is.
B
Earth’s oceanic crust has lava flowing from the mantle.
C
Earth’s outer core has a composition of solid iron and nickel.
D
Earth’s outer core is deeper within Earth than oceanic crust is.
8

Which layer of Earth experiences the least amount of pressure?

A
crust
B
mantle
C
outer core
D
inner core
9

Study the diagram about the varying pressures of Earth’s Layers.

Question illustration
A
110 GPa
B
220 GPa
C
305 GPa
D
360 GPa
10

Which best explains how heat plays a role in the movement of materials within Earth’s interior?

A
Hot material near Earth’s surface is more dense and sinks, and when it cools, it becomes less dense and rises.
B
Hot material near the core is more dense and rises, and when it cools, it becomes less dense and sinks.
C
Hot material near Earth’s surface is less dense and sinks, and when it cools, it becomes more dense and rises.
D
Hot material near the core is less dense and rises, and when it cools, it becomes more dense and sinks.

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