Earth's Interior Answers

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

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A
2,000 km
B
4,000 km
C
6,000 km
D
8,000 km
2
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Study the table about Earth’s interior.Which conclusion is supported by information in the table?

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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.
3

Which object can an S wave travel through?

A
air
B
magma
C
soil
D
water
4

Study the image of Earth’s layers.

Question illustration
A
Earth’s mantle is thinner than its oceanic crust.
B
Earth’s outer core is thicker than its mantle.
C
Earth’s continental crust is thicker than its lithosphere.
D
Earth’s lithosphere is thinner than its asthenosphere.
5

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.
6

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.
7

Study the graph about seismic waves.What does the graph show?

Question illustration
A
The S and P waves travel the same distance through Earth’s crust in the same amount of time.
B
The P wave travels through Earth’s crust more quickly than the S wave travels.
C
It takes the P wave 18 minutes to travel 6,000 km through Earth’s crust.
D
It takes the S wave 11 minutes to travel 8,000 km through Earth’s crust.
8

Study the table about Earth’s interior.If silicic rock is found in a core sample, what evidence does this provide about the rock’s location?

Question illustration
A
Its location is likely underneath an ocean or a mountain.
B
Its location is likely denser than Earth’s lithosphere.
C
Its location likely has a consistency that changes from solid to liquid.
D
Its location likely contributes to the creation of Earth’s magnetic field.
9

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.
10

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

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