Across
- 2. What an object will do if it is more dense.
- 4. Boundary when plates move together.
- 5. These have been known to switch.
- 7. Movement of the ocean floor away from either side of a mid-ocean ridge.
- 9. Measure of how much mass is contained in a given unit volume.
- 10. Earthquakes occur with this plate boundary.
- 11. System of undersea mountain ranges.
- 14. Made up of crusts and rigid upper mantle.
- 15. Only moves through solid rock (not liquid).
- 16. Because of this, oceanic crust gets recycled.
- 18. The layer of the Earth that is the hottest.
- 20. The equation for density is: D=Mass/?
Down
- 1. Found below the lithosphere.
- 3. One type of crust we discussed.
- 6. Scientists study these to learn more about Earth's layers.
- 8. Theory that describes continental movement and proposes an explanation of why and how continents move.
- 11. Convection happens in this layer and is the primary force of plate movement.
- 12. Boundary when plates move apart.
- 13. What an object will do if it is less dense.
- 17. Cycling of matter due to flow of energy from Earth's interior.
- 19. Fastest kind of seismic wave.