2 pt

1. Erosion Potpourri Chemical Weathering Mechanical Weathering Deposition 1pt 1 pt 1 pt 1pt 1 pt 2 pt 2 pt 2pt 2pt 2 pt 3 pt 3 pt 3 pt 3 pt 3 pt 4 pt 4 pt 4pt 4 pt 4pt 5pt 5 pt 5 pt 5 pt 5 pt

2. True or false… Erosion occurs when rocks are not moving…

3. False

4. What can be moved because of erosion?

5. Rocks, sediment, and Earth materials

6. The formation of sand dunes is the result of —

7. Deposition

8. The rich topsoil of the prairie in the picture shown makes this ecosystem suitable for the growth of a variety of grasses. All of the following processes contribute to the formation of the topsoil in the prairie except — A weathering of rocks B ocean waves C deposition of weathered material D decomposition of living things

9. ocean waves

10. _______is the most important erosional agent and erodes most often in streams or rivers.

11. Wateris the most important erosional agent and erodes most often in streams or rivers.

12. A hurricane forms over the ocean and hits the Texas coast and travels inland. What is the most likely effect of this event? A More species of animal will inhabit the coast B The shape and size of beaches will be changed C The affected area will be less vulnerable to future natural disasters D Native plants will never inhabit the area again

13. B The shape and size of beaches will be changed

14. When the scooter hits a rock, the rider tends to fly forward because – A objects at rest tend to stay at rest B the scooter is subjected to a balanced force C a force opposes the motion of the scooter but not the rider D unbalanced forces cause objects to move at a constant speed

15. C. a force opposes the motion of the scooter but not the rider

16. Which of the following is a force that can oppose or change motion? A. gravity B. air resistance C. friction D. all of the above

17. D. all of the above

18. Force • The diagram above illustrates a movable pulley. This pulley gives a mechanical advantage by - • A reducing the force required to lift the load. • B changing the force direction • C requiring the force to be greater than the load • D requiring the force to move less distance than the load Load

19. A. reducing the force required • to lift the load.

20. The picture shows a simple fixed pulley being used to lift a heavy box. Which of these does the pulley change?

21. C. The direction of force required to move the box

22. Chemical weathering happens quickly in ______, _______environments because water is needed for the chemical reactions.

23. warm, moist

24. In chemical weathering, a rock is broken down by ______ ______that change its mineral composition and physical and chemical properties

25. chemical reactions

26. True of False: Water can chemically weather rocks by dissolving rocks.

27. True

28. True of False: Living organisms such as Lichens do not chemically weather rocks.

29. False

30. True of False: Rust is a form of chemical weathering

31. True

32. Mechanical weathering: __________ breaks rocks down into smaller pieces

33. physically

34. True or False: Weathering happens to rocks that are moving.

35. False

36. Explain how this is an example of weathering?

37. The tree roots are growing into the rock prying it into smaller pieces

38. How does freezing and thawing cause mechanical weathering?

39. When water freezes, it expands causing the cracks go grow

40. What is abrasion?

41. Abrasion is mechanical weathering in which rocks rub against each other wearing them down

42. What is it called when a glacier picks up a rock, or sediments off of the ground?

43. Plucking

44. How can wind be a cause of erosion?

45. Wind can blow sediment (dirt) from one place to another

46. What happens to rocks and sediment that are plucked by glaciers whenever the glacier melts?

47. The rocks and sediment are deposited in a new location.

48. Describe how waves in the ocean can cause erosion.

49. Waves can cause beaches and coastlines to be reformed time after time

50. What force causes rock slides and mud flows?