Earth and Plate Tectonics
Across
- 1. made up of iron and nickel.
- 2. Theory that explains how continents shift position on the earth's surface
- 4. hard layer on the outer most part of the earth.
- 7. When oceanic crust is formed from volcanic activity and gradually moves away from the ridge.
- 11. Theory that the earth's outer shell is divided into several plates that glide over earth's mantle.
- 12. Waves of energy caused by sudden breaking of rock within the earth or explosion.
- 13. Move through the body of an object unlike surface waves.
- 14. region of the upper part of the earth's mantle.
Down
- 1. a current in a fluid that results from convection.
- 3. region surrounding the earth.
- 5. Crust, mantle, Convection currents, Outer core, inner core
- 6. rigid outer part of the earth.
- 8. Supercontinent that eventually split up in the the continents we know today.
- 9. largest part of the earth that takes up 84% of the earth's total volume.
- 10. First waves of an earthquake that arrive on the seismograph.