Across
- 4. Releasing gas that has been dissolved.
- 7. It is the middle layer of the earth and it is made out of hot rocks.
- 8. When the plates move apart from each other.
- 9. When the plates move very close together.
- 10. A person that studies the earth.
- 11. These make up the earth’s
- 13. It is in between the lithosphere and the upper mantle.
Down
- 1. There are seven land masses on earth.
- 2. Partly melted rock under the surface
- 3. This is a solid nickel layer of the earth.
- 5. It is the movement of the earth. Also the name of the of this puzzle.
- 6. It is a solid part of the earth. It is also called the geosphere.
- 12. The person who confirmed Alfred Wigener’s theory.