Across
- 3. a layer of silicate rock between the crust and the outer core
- 4. when something makes light change direction when hit at an angle
- 5. a very hard, granular, crystalline, igneous rock
- 6. an area of the Earth's mantle from which hot plumes rise upward
- 11. where thinner oceanic crust descends beneath a thicker continental crust.
- 13. an instrument that measures and records details of earthquakes
- 14. a belt of intense radiation in the magnetosphere
- 15. rock formed from preexisting rocks reacting to change in environment
- 17. rock that formed from deposits of pre-existing rocks or pieces
- 19. the science that deals with the earth and everything about it
Down
- 1. materials in planets begin to separate from one another
- 2. a theory that the crust is broken into pieces that move
- 7. a metric unit of length equal to 1,000 meters
- 8. the very hot, very dense center of our planet
- 9. the stream of ionized particles flowing outward from the sun
- 10. dark, fine-grained volcanic rock
- 12. the outermost shell of a terrestrial planet
- 13. an elastic wave in the Earth produced by an earthquake
- 16. a planets magnetic field
- 18. rock that forms when hot, molten rock crystallizes and solidified