Flyswatter Game: Earthquake Questions Lessons 5 and 6 (EQ) 1. Ring of Fire – What area in the world tends to have the most earthquakes? 2. Compression – This is the stress when two objects are squeezing together. 3. Mercalli scale - This scale rates earthquakes according to their intensity by how much damage they do. 4. Surface waves – These waves are the most damaging in an earthquake. 5. Tension – This is the stress created when two objects are moving apart from each other. 6. Richter scale - A scale that rates seismic waves as measured by a mechanical seismograph; it’s no longer used by scientists. 7. Surface waves – These waves do not travel through the Earth. 8. Shearing – Type of stress when two objects pass by each other horizontally. 9. Seismograph - A device that records seismic movements in the earth. 10. S waves – These waves cannot go through liquids. 11. Closer to the epicenter - Where will the most damage generally be after an earthquake? 12. Magnitude - A term that refers to the total energy released by an earthquake. 13. Tectonic boundaries move and release energy – Why do most earthquakes take place at plate boundaries? 14. P waves – These body waves can go through all substances. 15. Moment Magnitude scale - The measurement of earthquake’s strength based on seismic waves, movement along fault and the rock type. 16. Earthquake under the sea – What causes a tsunami? 17. Aftershock - An earthquake that occurs after an initial earthquake in the same area. 18. Faults – What is the major cause for earthquakes? 19. Convergent plate boundary – What boundary has two plates moving toward each other. 20. Liquefaction - The process by which an earthquake’s violent movement causes loose, moist soil to become a thick liquid. 21. Epicenter – At what point is the most damage generally done in an earthquake? 22. Tsunami - A giant wave caused by an earthquake in the ocean floor. 23. Deformation – A change in the shape and size of rock. 24. There are no plate boundaries. - What is the most likely reason that there were no major earthquakes recorded in the interior of the continent of Africa? 25. Focus – Where does the earthquake begin? 26. Compression - Which type of stress happens at convergent plate boundaries? 27. Fault – A fissure where rock movement has taken place 28. Convergent tectonic plate boundary – Boundary where the deepest earthquakes occur. 29. Earthquake – ground movement that occurs when blocks of rocks move and release energy. 30. Decreases – As the distance from an epicenter increases, what happens to the intensity? 31. Strike-slip fault – What type of fault is the San Andreas Fault? 32. Compression and expansion - What describes how P waves affect the rock through which they travel? 33. Increases – What happens to magnitude as you get closer to the epicenter. 34. Fire – This type of danger can result from an earthquake? 35. Body waves - These waves travel underground outward from the focus. 36. Surface waves - L waves are what category of waves? 37. Flooding – This type of danger can result from an earthquake? 38. 100 – How many times stronger is an EQ of magnitude 8 on the Richter scale than an EQ of magnitude 6 on the Richter scale? 39. Stress - A force that acts on a rock to change its shape or volume. 40. Polluted water - This type of danger can result from an earthquake? 41. P waves – The fastest seismic waves. 42. 30 – How much more powerful is a 5 than a 4 on the moment magnitude scale? 43. 900 – How much more powerful is a 6 than a 4 on the moment magnitude scale?