Plate Tectonics
Across
- 2. An instrument that records the motions of the Earth, especially earthquakes
- 4. A written record of an earthquake, recorded by a seismograph
- 6. Shaking of the Earth caused by a sudden movement of rock beneath its surface
- 9. Tectonics The theory that the Earth's crust and upper mantle (the lithosphere) is broken into a number of more or less rigid, but constantly moving, segments or plates
- 10. Of or having to do with earthquakes
- 12. To bend or change direction
- 14. One or a series of huge sea waves caused by earthquakes or other large-scale disturbance of the ocean floor
- 15. The circular depression containing a volcanic vent
- 16. volcano A volcano that is currently erupting, or has erupted during recorded history
Down
- 1. The term used for magma once it has erupted onto the Earth's surface
- 2. A scientist who studies earthquakes
- 3. Spot An area in the middle of a lithospheric plate where magma rises from the mantle and erupts at the Earth's surface
- 5. A measure of the strength of an earthquake or strain energy released by it, as determined by seismographic observations
- 7. The maximum height of a wave crest or depth of a trough
- 8. That point on the Earth's surface directly above the hypocenter of an earthquake
- 11. The thin outer layer of the Earth's surface
- 13. scale The system used to measure the strength of an earthquake
- 17. The innermost layers of the Earth