Across
- 3. the layer we stand on and the top layer
- 5. the rigid outer part of the earth, consisting of the crust and upper mantle.
- 7. heat causing the rocks to rise and fall
Down
- 1. the 3rd layer and the closets to the center and the only liquid layer
- 2. The _______ is about 2,900 kilometers (1,802 miles) thick, and makes up 84% of Earth's total volume.
- 4. geologists use these waves to help figure out what is inside of earth.
- 6. the very middle of the earth and the layer that nobody has or ever will see