1. STRESS – The amount of force exerted on a material.

2. 3 TYPES COMPRESSION TENSION SHEAR

3. COMPRESSION

4. TENSION

5. SHEAR

6. STRAIN – When materials become deformed in response to stress.

7. STRAIN

8. FAILURE – When stress exceeds the strength of the material.

9. FAILURE

10. FAULT – A failure of Earth’s crust.

11. 3 TYPES NORMAL REVERSE STRIKE-SLIP

12. NORMAL

13. REVERSE

14. STRIKE- SLIP

15. FOCUS – The point where FAILURE occurs below Earth’s surface: where an earthquake originates.

16. EPICENTER – The point on Earth’s surface directly above the FOCUS.

19. Seismic Waves THREE TYPES PRIMARY SECONDARY SURFACE

20. http://www.geo.mtu.edu/UPSe is/waves.html

21. SEISMOMETER – An instrument that measures the vibrations caused by earthquakes

24. SEISMOGRAPH

26. MAGNITUDE – The amount of energy released during an earthquake.

27. RICHTER SCALE – A numeric scale that classifies earthquakes based on the size of its seismic waves.

30. Earthquake measuring 7.0 kills 46 in Indonesia and leaves thousands homeless…

40. TSUNAMI – A large ocean wave generated by vertical motions of the sea floor during an earthquake.