Download Topics 1-3 Review

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Grade 7 Planet Earth Topics 1-4 Review
Topic One: Minerals
Define the following terms: (1 mark each)
1. Minerals:
2. Earth’s Crust:
3. Element:
4. Compound:
5. Mohs Hardness Scale:
6. Crystals:
7. Lustre:
8. Colour:
9. Streak:
10. Cleavage:
11. Fracture:
12. List 4 examples of minerals. (4 marks)
13. Describe how the Mohs Hardness Scale works. Give an example of a mineral and
its number on the scale. (3 marks)
14. List the 6 major crystal systems and draw a picture of each. (6 marks)
Topic Two: Rocks
15. What are the 3 rock families? (3 marks)
16. Explain how each tock type of rock is formed. (3 marks)
a) Igneous:
b) Sedimentary:
c) Metamorphic:
17. There are many rocks that go through metamorphic change. Give an example of a
parent rock and name the metamorphic rock it changes into. (2 marks)
Define the following terms: (1 mark each)
18. Lava:
19. Magma:
20. Intrusive rock:
21. Extrusive rock:
22. Sediments:
23. Stratification:
24. Compaction:
25. Cementation:
26. Parent rock:
27. Rock cycle:
28. Compost:
29. Humus:
30. Soil profile:
31. Topsoil:
Topic Three: Erosion and Weathering
Define/Describe the following terms (1 mark each)
32. Erosion:
33. Weathering:
34. Sedimentation:
35. Mechanical Weathering:
36. Frost Wedging:
37. Chemical Weathering:
38. Biological Weathering:
39. Gradual changes:
40. Sudden changes:
41. Give an example of each of the following: (4 marks)
a) Mechanical weathering:
b) Chemical weathering:
c) Physical Biological weathering:
d) Chemical Biological weathering:
42. Give an example of a something that would cause a ‘gradual change’. Give an
example of something that would cause a ‘sudden change’. (2 marks)
43. Describe the difference, in your own words, between weathering and erosion. (2
marks)
Topic 4: The Moving Crust
Define/Describe the following terms: (1 mark each)
44. Earth’s crust:
45. Mantle:
46. Upper mantle:
47. Lower mantle:
48. Lithosphere:
49. Outer core:
50. Inner core:
51. Continental Drift:
52. Sonar:
53. Sea floor spreading:
54. Theory of plate tectonics:
55. Converging plates:
56. Diverging plates:
57. Convection current:
58. Subduction zones:
59. Draw a diagram of the earth labeling the order of each of the following layers:
inner core, earth’s crust, upper mantle, outer core, lower mantle, lithosphere, and
mantle. (7 marks)
60. If Sea floor spreading is occurring does that mean that the Earth’s crust is getting
bigger? Explain your answer. (2 marks)