Plate Tectonics

3. the closer to the epicenter of the earthquake, the more intense the shaking
7. a crack in the Earth's crust
8. a vibration of the Earth that is produced by a quick release of energy
10. machine used to measure the seismic waves
12. causes subduction, earthquakes, formation of trenches and mountains
13. where inside the Earth that the earthquake occurred
15. study of the large scale motion of the plates that make up the Earth's lithosphere

1. where on the Earth's surface (directly above the focus) that the earthquake occurred
2. the measure of the earthquake remains unchanged despite the distance from the epicenter
4. wave that makes the ground shake and roll
5. causes seafloor spreading, mid-ocean ridges, earthquakes and rift valleys
6. causes major earthquake
9. wave that compresses and expands
11. earth consists of ___ major plates
12. tectonic plates are ____________ moving
14. the data that is collected from earthquakes
16. wave that vibrates side to side or up and down