Chapter 3 Section 1

Question 1

What two types of evidence have Geologists used to learn about Earth’s interior?

Answer 1

direct evidence from rock samples and indirect evidence from seismic waves.

Question 2

Waves that occur when there is an earthquake. Geologists record them and study how they travel through Earth.

Answer 2

Seismic waves

Question 3

What are the three main layers of Earth?

Answer 3

Crust, the mantle, and the core.

Question 4

Results from a force pressing on an area.

Answer 4

pressure

Question 5

The layer of rock that forms Earth’s outer skin.

Answer 5

Crust

Question 6

The layer of Earth that includes both dry land and the ocean floor.

Answer 6

crust

Question 7

Dark rock with a fine texture.

Answer 7

Basalt

Question 8

Rock that is usually light in color and has a coarse texture.

Answer 8

Granite

Question 9

A layer of hot rock that is below the boundary of solid material.

Answer 9

mantle

Question 10

This layer of Earth is very hot, but solid.

Answer 10

mantle

Question 11

How thick is the Earth’s mantle?

Answer 11

Almost 3,000 kilometers thick