Across
- 5. Solid rock layer.
- 9. A electronic machine that records seismic waves.
- 10. a long narrow depression on the bottom of the ocean.
- 11. A long chain of volcanoes.
- 13. A word that describes past periods of extensive glaciations.
- 14. molten layer of the upper mantle.
- 18. Energy wave that transfer into space.
Down
- 1. A release of energy in the earth;s crust.
- 2. Earth's thickest layer.
- 3. somewhere inside the earth where the earthquake starts.
- 4. The focus where the earthquake starts.
- 6. A break or Fracture in a rock layers.
- 7. measurement of the average kinetic energy.
- 8. An opening in the earth's surface that can spew melted rocks and gases.
- 9. Land that is made up of more than one continent.
- 12. Crust and upper potion of the earth's mantle.
- 13. Ground that is usually frozen from year to year.
- 15. Tectonic plates that are pushing under another tectonic plate.
- 16. Below earth's mantle which contains nickel and iron.
- 17. An amount of Force in an area.