Third Nine Weeks Exam Study Guide

Third Nine Weeks Exam Study Guide 1. What do we call the deepest part of the ocean floor? 2. Be able to label the oceans on a map. 3. What is the most common salt in ocean water? 4. What is the name for the part of the wave measured from crest to crest? 5. What is the name for the part of the wave measured from crest to trough? 6. What causes ocean tides? 7. What causes surface currents? 8. What causes waves? 9. What happens during precipitation? 10. What is it called when water changes from a liquid to a gas? 11. What is it called when water changes from a gas to a liquid? 12. List earth’s four layers in order from highest to lowest temperature. 13. List earth’s four layers in order from highest to lowest density. 14. List the composition of each of earth’s four layers. 15. Which of earth’s four layers is thickest? Thinnest? 16. Explain how the Moh’s hardness scale can help you differentiate between two minerals. 17. What do all minerals have in common? 18. Where is most of earth’s freshwater found? 19. Any rock can become a different type of rock through the ______. 20. What percentage of earth’s water is salt water? What percentage is fresh water? 21. When an existing rock is exposed to extreme heat and pressure what will happen to it? 22. What type of rock is most likely to be made of small grains of sand or pebbles that are cemented together? 23. Name some land features that form due to deposition of sediments. 24. How would you expect a rock to look if it has been in a river for a long time? Why? 25. How does a meander form? 26. How do folded mountains form? 27. What commonly occurs at transform boundaries? 28. What do we call the type of boundary where two plates collide? 29. What causes tsunamis? 30. How do rift valleys form? 31. How do trenches form? 32. Who first suggested that all continents were once joined in a single landmass? 33. What evidence supported the idea that all continents were once joined in a single landmass? 34. If seashells are found on a mountain top what does that mean about the environment of the past in that area? 35. How does soil formation start? 36. Draw a soil profile and label all the horizons (a, b, c, and bedrock). 37. What is another name for the a horizon? 38. What is another name for the b horizon? 39. Describe the composition of each soil horizon. 40. What is soil made of? 41. Why is water considered a renewable resource? 42. What are some ways to conserve water? 43. Describe the following methods for soil conservation: contour plowing, conservation plowing or no-till, crop rotation 44. What causes acid rain? 45. What is a groin? Why are they built? 46. What is a wetland? Why are they important?