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Name __________________________ Date _________________
Class ___________
Plate Tectonics ■ Review and Reinforce
Earth’s Interior
Understanding Main Ideas
Label the layers of Earth by writing the name of the layer in the blank.
1.
2.
3.
4.
Earth’s layers
Answer the following questions on a separate sheet of paper.
5. What are two types of evidence geologists use to learn about Earth’s interior?
6. Compare and contrast the asthenosphere with the lithosphere.
Building Vocabulary
Match each term with its definition by writing the letter of the correct definition
on the line beside the term in the left column.
____
7. basalt
____
8. asthenosphere
a. a rock that makes up much of the ocean
floor
____
9. crust
b. the force pushing on a surface or area
____ 10. outer core
____ 11. lithosphere
____ 12. granite
c. the layer made up of liquid iron and
nickel
d. the uppermost part of the mantle
____ 13. pressure
e. a rock that makes up the core of the
continents
____ 14. seismic wave
f. outer rind of rock
g. a wave produced by an earthquake
h. soft layer of rock in the mantle
ANSWER KEY
Earth’s Interior
Understanding Main Ideas
Label the layers of Earth by writing the name of the layer in the blank.
1.
2.
3.
4.
Earth’s layers
1. Crust
2. Mantle
3. Outer core
4. Inner core
Answer the following questions on a separate sheet of paper.
5. What are two types of evidence geologists use to learn about Earth’s interior?
1. Direct evidence – drilling rock samples
2. Indirect evidence – using seismic waves (p and s waves) to determine the
phases of matter of the layers. P waves can go through all of the layers,
they speed up in solids (mantle and inner core) and slow down in liquids
(outer core). S waves can only go solids and stop in liquids. As a result,
we know the mantle and inner core are solid and the outer core is a liquid.
6. Compare and contrast the asthenosphere with the lithosphere.
Asthenosphere is part of the upper mantle, lower crust and a solid that bends like plastic
Lithosphere is a rigid, solid later that includes the crust.
They are both solids.
Building Vocabulary
Match each term with its definition by writing the letter of the correct definition
on the line beside the term in the left column.
a
7. basalt
h
8. asthenosphere
a. a rock that makes up much of the ocean
floor
f
9. crust
b. the force pushing on a surface or area
c. the layer made up of liquid iron and
nickel
c
10. outer core
d
11. lithosphere
e
12. granite
b
13. pressure
e. a rock that makes up the core of the
continents
g
14. seismic wave
f. outer rind of rock
d. the uppermost part of the mantle
g. a wave produced by an earthquake
h. soft layer of rock in the mantle
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