1. The planet we call Earth has how many layers? ____________

Write them in order from the center to the outside of the planet.

2. Use this diagram to answer these questions:

Name the thickest layer ...

Name the thinnest layer ...

Write as a fraction the relationship of the thinnest layer to the thickest layer.

Calculated to challenge. Perhaps you have imagined digging a tunnel through the earth that comes out the other side.
Figure it out ... How many miles would you have to dig?

3. Write 4 facts about the Earth's Crust.

a.

b.

c.

d.

4. The crust and the upper layer of the mantle together make up a zone of rigid, brittle rock called the

5. Write three facts about the Mantle.

a.

b.

c.

6. What are the Convection Currents?

7. Name two metals found in the Outer Core.

The border between the Outer core and the Inner Core is how many miles beneath the crust?

8. The Inner core is under so much pressure it does not move like a liquid, it ...

Write the temperature of the center of the Earth.

9. A scientist who studies rocks is called a

What does a Geomorphologist study?

10. Do A Piece of the Crust

Scientists study Earth's missing crust

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©2004 Cindy O'Hora All Rights Reserved. posted 10/2004 updated 9/2007

Released to public domain for noncommerical use in honor of Florence Bascom

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