1. Plate tectonics review

2. Question 1
The ____________ is (are) an example of a transform boundary.
Appalachian Mountains
San Andreas Fault
Mid-Atlantic Ridge
Himalaya

3. Answer 1
San Andreas Fault

4. Question 2
On which of Earth’s layers do we live?

5. Answer 2
the crust

6. Question 3
Which geologic feature was most likely formed when two lithospheric plates collided?
Grand Canyon
Lake Michigan
Sierra Madre mountain range
Mississippi River delta

7. Answer 3
Sierra Madre mountain range

8. Question 4
Where can the result of plate movement be seen?

9. Answer 4
at plate boundaries

10. Question 5
The Great Rift Valley in Africa is a ________ boundary.

11. Answer 5
divergent

12. Question 6
Which layer of the Earth is made mostly of liquid metal?

13. Answer 6
layer 3

14. Question 7
Plates slide past one another at ________ boundaries.

15. Answer 7
transform

16. Question 8
The Himalaya Mountains formed from a collision of the Indo-Australian plate with the Eurasion plate. Which best approximates the rate of movement of the Indo-Australian plate?
0.67 mm per year
6.7 cm per year
6.7 meters per year
67 meters per year

17. Answer 8
6.7 cm per year

18. Question 9
The thickest layer of the Earth contains about 80% of the volume of Earth. What is this layer?

19. Answer 9
the mantle

20. Question 10
Plates move apart at __________ boundaries.

21. Answer 10
divergent

22. Question 11
The crust and upper mantle make up Earth’s _________________.

23. Answer 11
lithosphere

24. Question 12
Scientists theorize that millions of years ago South America and Africa formed a single land mass.

25. Question 12
Which statement best describes why South America and Africa are now thousands of miles apart?
Strong winds continually pushed the land masses away from each other.
Ocean currents carried some land masses east and some west.
Lithospheric plates moved the continents apart at a rate of centimeters per year
Tectonic plates slid together forming mountains that forced the continents apart.

26. Answer 12
Lithospheric plates moved the continents apart at a rate of centimeters per year

27. Question 13
The Andes Mountains of South America were gradually formed when the Nazca and South American tectonic plates collided. Which of these caused this collision?
movement of the material in Earth’s core
changes in Earth’s magnetic field
convection currents in the Earth’s mantle
volcanic activity in the Earth’s crust

28. Answer 13
convection currents in Earth’s mantle

29. Question 14
Which layer of Earth is composed mainly of liquid water and different types of rock crystals such as quartz?

30. Answer 14
the crust

31. Question 15
Which is the best description of where earthquakes are likely to occur?
along a coastline
in the middle of an ocean
in the middle of a continent
along two plate boundaries

32. Answer 15
along two plate boundaries

33. Question 16
Scientists place devices for communicating with satellites on the edge of continents. Two devices were placed on continents where lithospheric plates are moving apart. If these lithospheric plates are moving at a typical rate, about how much farther apart from each other will the devices be in 10 years?
1 cm, 100 cm, 10 m, or 1 km

34. Answer 16
100 centimeters

35. Question 17
Active volcanoes are most likely to form at ______________.
the center of continents
convergent oceanic-continental boundaries
transform boundaries
divergent boundaries

36. Answer 17
convergent oceanic-continental boundaries

37. Question 18
The thinnest layer of the Earth ranges in thickness between 7 kilometers and 70 kilometers. Which layer is being described?

38. Answer 18
the crust

39. Question 19
Scientists have observed that the plates move at rates ranging from 1 cm to 12 cm per __________.

40. Answer 19
year

41. Question 20
_______________ are formed when two continental plates collide.

42. Answer 20
mountain ranges

43. Question 21
Which of these best describes the composition of the inner core of Earth?
solid iron and nickel
liquid iron and nickel
carbon dioxide and ice
quartz and oxygen

44. Answer 21
solid iron and nickel

45. Question 22
The boundary between two plates moving together is called a _____________ boundary.

46. Answer 22
convergent

47. Question 23
Scientists theorize that the Atlantic Ocean is slowly increasing in width. Which is the best approximation of the rate at which lithospheric plates beneath the Atlantic Ocean are moving?
2 mm per year
2 cm per year
2 meters per year
2 km per year

48. Answer 23
2 centimeters per year