1. Changes on Earth Earth’s layers
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2. Earth’s Layers Earth is divided into three layers.
the outer layer is called the crust.
Beneath the crust lies the mantle.
The core is the innermost layer
The core is made of metal.

3. Landforms The solid features formed on Earth’s crust.
Other features include bodies of water
Many landforms are shaped by water

4. 4

5. Coast Lake Plateau Plain Glacier Ocean Hill Volcano Valley River
Mountain
Valley
River

6. True or False
Earth is divided into four layers.
True
False

7. True or False
the outer layer is the crust
True
False

8. True or False
The mantle is the innermost layer
True
False

9. True or False
Most landforms are
formed by volcanoes
True
False

10. Weathering Any action that breaks rocks into pieces
Changes can be very slow
Weathering goes on all the time
plants and water can cause weathering

11. The movement of weathered material
Erosion
The movement of weathered material

12. Wind, gravity, and glaciers can cause erosion.

13. Water causes erosion in many places.

14. Gravity pulls rocks and soil downhill and causes erosion