plate tectonics
Across
- 1. Core A layer below earth's mantle that has nickel and iron
- 6. Shaking of the ground.
- 8. A measure of average kinetic energy.
- 10. Plates huge slabs of rock that moves under a layer of molten rock.
- 11. Where the earthquake starts.
Down
- 2. waves through space that transfers energy.
- 3. the amount of pressure in an area.
- 4. something that detects variations in an area of a magnetic field.
- 5. ground that is usually frozen all year long.
- 7. Earth's thickest layer.
- 8. A long narrow depression on the bottom of the sea.
- 9. something that spews out gases and melted rock and etc.