Across
- 4. The Earth’s lithosphere is broken up into many _____________ plates.
- 6. This is the thickest layer of the Earth.
- 8. Rock formed from cooling magma.
- 9. An tremor that causes the earth to shake.
- 11. The area where two plates collide and one goes beneath the other and is destroyed.
- 12. These are mainly formed at transform boundaries.
- 14. This is the thinnest layer of the Earth.
- 15. The first hundred kilometers of the Earth is called ______.
- 19. These boundaries can cause subduction zones.
- 20. Spews ash and magma.
Down
- 1. Two plates moving apart makes a ______ boundary.
- 2. Rock formed from Cementation and Compaction
- 3. The ______ is the less dense plate.
- 5. The center of the Earth.
- 7. When two tectonic _______ collide they can cause earthquakes.
- 10. Rock formed from heat and pressure.
- 13. Earthquakes and faults are mainly made at this boundary.
- 16. The _____ plate is denser than the continental plates.
- 17. A formation where two plates fold and go up.
- 18. Melted rock above ground.