U4 6th Lithosphere Study Guide

A scientist named Alfred Wegener claimed that the continental landmasses were “drifting” across the Earth, sometimes plowing through oceans and into each other. His theory is called...

• The Land Moving Theory

• The Big Bang Theory

• The Earth's Crust Theory

• The Continental Drift Theory

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Over time the Earth's Crust...

• has merged into one super continent

• has disintegrated into dust

• has broken into smaller pieces that move over molten rock

• has become increasing stable

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The diagram shows the layers of Earth. Which part of the diagram represents the crust?

• 1

• 2

• 3

• 4

The diagram shows the layers of Earth. Which part of the diagram represents the mantle?

• 1

• 2

• 3

• 4

The diagram shows the layers of Earth. Which part of the diagram represents the outer core?

• 1

• 2

• 3

• 4

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The diagram shows the layers of Earth. Which part of the diagram represents the inner core?

• 1

• 2

• 3

• 4

Why are continental plates found at higher elevations than ocean plates?

• oceanic plates are thicker than continental plates

• continental plates are thinner than oceanic plates

• continental plates are less dense than oceanic plates

• continental plates are more dense than oceanic plates

Seismic waves travel faster through...

• the mantle

• the ocean

• the air

• the crust

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Seismic waves travel fastest though...

• heavier matter

• lighter matter

• less dense matter

• more dense matter

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Soundwaves and seismic waves are both mechanical waves. Why do mechanical waves move more quickly through liquids than gases?

• in liquids the molecules are closer together making it easier for particles to transfer energy to a nearby particle

• in liquids the molecules are farther apart making it easier for particles to transfer energy to a nearby particle

• in gases, the molecules are farther apart making it easier for particles to transfer energy to a nearby particle

• in gases, the molecules are closer together making it more difficult for particles to transfer energy to a nearby particle

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