Review for Exam 32 & 33

1. Review for Exam 32 & 33 By Mrs. Senger

2. The speed of a seismic wave depends on • The type of material it travels through • The amplitude • Its frequency • The amount of sediment

3. The speed of a seismic wave depends on • The type of material it travels through • The amplitude • Its frequency • The amount of sediment

4. Motion in a P Wave is • Side to side • Up and down • Transverse • Longitudinal

5. Motion in a P Wave is • Side to side • Up and down • Transverse • Longitudinal

6. The fastest seismic wave is a • Rayleigh wave • Tertiary wave • Secondary wave • Primary wave

7. The fastest seismic wave is a • Rayleigh wave • Tertiary wave • Secondary wave • Primary wave

8. A seismograph • Helps prevent earthquakes • Measures ground movement • Predicts earthquakes • Measures fault displacement

9. A seismograph • Helps prevent earthquakes • Measures ground movement • Predicts earthquakes • Measures fault displacement

10. Secondary waves can travel through all areas of the Earth except the • Mantle • Surface • Inner core • Outer core

11. Secondary waves can travel through all areas of the Earth except the • Mantle • Surface • Inner core • Outer core

12. The outer core • Is solid as a rock • Transmits S waves • Has a plastic like flow • Flows fast enough to power the Earth’s magnetic field

13. The outer core • Is solid as a rock • Transmits S waves • Has a plastic like flow • Flows fast enough to power the Earth’s magnetic field

14. The Earth’s layer with plastic like behavior is the • Mantle • Inner core • Outer core • Crust

15. The Earth’s layer with plastic like behavior is the • Mantle • Inner core • Outer core • Crust

16. The core of the earth is probably composed of • An iron-nickel alloy • Aluminum oxides • Silicate minerals • Calcium magnesium sulfate

17. The core of the earth is probably composed of • An iron-nickel alloy • Aluminum oxides • Silicate minerals • Calcium magnesium sulfate

18. Evidence to support the concept that the inner core is solid & the outer core is liquid comes from • The inner core is not solid, it is a liquid • Refraction of seismic waves as they encounter different mediums • The absence of waves after the crust • The wave shadow effect of P & S waves and the P waves increasing speed as it enters the core

19. Evidence to support the concept that the inner core is solid & the outer core is liquid comes from • The inner core is not solid, it is a liquid • Refraction of seismic waves as they encounter different mediums • The absence of waves after the crust • The wave shadow effect of P & S waves and the P waves increasing speed as it enters the core

20. The inner core is solid because • It is composed of iron and nickel • The surrounding outer layers act as a blanket to insulate the core • Pressure from the weight of the surrounding layers prevents the inner core from melting • None of these, the inner core is a liquid

21. The inner core is solid because • It is composed of iron and nickel • The surrounding outer layers act as a blanket to insulate the core • Pressure from the weight of the surrounding layers prevents the inner core from melting • None of these, the inner core is a liquid

22. The outer core is a liquid because • It is magnetically charged • Of less weight, and thus less pressure • The inner core is solid • It is composed of molten iron

23. The outer core is a liquid because • It is magnetically charged • Of less weight, and thus less pressure • The inner core is solid • It is composed of molten iron

24. The outer core is thought to be molten because it • Is denser than the inner core • Will not transmit S waves • Will not transmit P waves • Is made of iron and nickel

25. The outer core is thought to be molten because it • Is denser than the inner core • Will not transmit S waves • Will not transmit P waves • Is made of iron and nickel

26. The earth’s magnetic field is generated in • The outer core • The mantle • The crust • Space

27. The earth’s magnetic field is generated in • The outer core • The mantle • The crust • Space

28. The mantle is composed of • Iron and nickel • Solid rock • Half liquid and half rocky material • Iron-rich silicate rocks

29. The mantle is composed of • Iron and nickel • Solid rock • Half liquid and half rocky material • Iron-rich silicate rocks

30. The upper mantle is the region known as the • Centrosphere • Mohorovicic • Lithosphere • Asthenosphere

31. The upper mantle is the region known as the • Centrosphere • Mohorovicic • Lithosphere • Asthenosphere

32. Thermal convection movement in the upper mantle • Generates electric current that powers the magnetic fields • Heats the earth’s core by friction • Is usually negligible • Greatly influences the Earth’s surface features

33. Thermal convection movement in the upper mantle • Generates electric current that powers the magnetic fields • Heats the earth’s core by friction • Is usually negligible • Greatly influences the Earth’s surface features

34. The crustal surface and the uppermost section of the mantle is called the • Mohorovicic • Centrosphere • Asthenosphere • Lithosphere

35. The crustal surface and the uppermost section of the mantle is called the • Mohorovicic • Centrosphere • Asthenosphere • Lithosphere

36. The lithosphere floats atop of the • Mohorovicic • Asthenosphere • Crust • mantle

37. The lithosphere floats atop of the • Mohorovicic • Asthenosphere • Crust • mantle

38. Movement of the lithosphere • Has leisurely pace and allows the formation of gentle rolling hills • Causes earthquakes and volcanoes • Has a plastic like flow • None of these

39. Movement of the lithosphere • Has leisurely pace and allows the formation of gentle rolling hills • Causes earthquakes and volcanoes • Has a plastic like flow • None of these

40. What portion of the surface crust is dense and thin? • Ocean crust • Continental crust • Both • Neither

41. What portion of the surface crust is dense and thin? • Ocean crust • Continental crust • Both • Neither

42. What portion of the surface crust is thick and low density? • Ocean crust • Continental crust • Both • Neither

43. What portion of the surface crust is thick and low density? • Ocean crust • Continental crust • Both • Neither

44. Continental crust is very buoyant compared with ocean crust because the continental crust is • Thinner than ocean crust • Very young and fresh • Mostly granitic rocks where ocean is mostly basaltic • Mostly basaltic with bubbles from the lava flow

45. Continental crust is very buoyant compared with ocean crust because the continental crust is • Thinner than ocean crust • Very young and fresh • Mostly granitic rocks where ocean is mostly basaltic • Mostly basaltic with bubbles from the lava flow

46. In an undisturbed sample of rocks, the youngest rocks are found • At the bottom • At the top • As an eroded bed • In the core of the anticline

47. In an undisturbed sample of rocks, the youngest rocks are found • At the bottom • At the top • As an eroded bed • In the core of the anticline

48. The San Andreas fault in California is a • Thrust fault • Normal fault • Strike slip fault • Syncline

49. The San Andreas fault in California is a • Thrust fault • Normal fault • Strike slip fault • Syncline

50. When rock is subject to compressive force, it may fault. If the rocks in the hanging wall are pushed up over the rocks of the footwall, it is called • Reverse • Normal • Strike slip • Syncline