Across
- 7. the mostly solid bulk of Earth’s interior
- 10. igneous rock consisting mainly of quartz, mica, and feldspar
- 12. the idea that earths crust has different portions
- 14. a tool that measures and records earthquakes
- 15. being able to find the difference between two things
- 16. a metric unit of length equal to 1,000 meters
- 18. the outermost shell of a planet
Down
- 1. formed from sediment deposited by water or air
- 2. two regions where radiation surrounds the earth at several heights
- 3. the magnetic region around the earth and other planets
- 4. innermost portion of the earth
- 5. fine-grained volcanic rock that displays a columnar structure
- 6. studying the geological features of an area
- 8. the continuous flow of charged particles from the sun
- 9. a rock that has gone under heat, pressure, or other natural causes
- 11. when an object causes a ray of light to change the direction in which it moves
- 13. an elastic wave in the earth produced by an earthquake or other means
- 17. is made from the intrusion and extrusion of magma or volcanic activity