1. Grade 7 Review

2. QUESTION What do scientists believe is the driving force of our moving plates?

3. ANSWER Convection Currents in the magma

4. QUESTION What SI (metric) unit is used to measure temperature?

5. QUESTION What SI (metric) unit is used to measure temperature?

6. ANSWER oC

7. QUESTION What process do plants use to make food from light?

8. ANSWER photosynthesis

9. QUESTION How is heat transferred through solids such as metals?

11. QUESTION A student heats equal amounts of sand and water in identical beakers on a hot plate set at 250 o C? He measures the temperature of both substances every minute for 45 minutes. What is a possible hypothesis?

12. ANSWER I believe the water will heat up faster than the sand.

13. QUESTION A student heats equal amounts of sand and water in identical beakers on a hot plate set at 250 o C? He measures the temperature of both substances every minute for 45 minutes. What is the independent variable?

14. ANSWER The materials – water or sand OR The time

15. QUESTION A student heats equal amounts of sand and water in identical beakers on a hot plate set at 250 o C? He measures the temperature of both substances every minute for 45 minutes. What is the dependent variable?

16. ANSWER The temperature of the materials

17. QUESTION A student heats equal amounts of sand and water in identical beakers on a hot plate set at 250 o C? He measures the temperature of both substances every minute for 45 minutes. What are three controlled variables?

18. ANSWER The temperature hotplate The amount of material The size of beaker The recording times

19. QUESTION What SI (metric) unit is used to measure weight?

20. ANSWER Newtons

21. QUESTION What are three properties used to identify minerals?

22. ANSWER Lustre (shine)  Colour Hardness  Streak Cleavage  Rock type

23. QUESTION What force is indicated in the diagram?

24. ANSWER Compression

25. QUESTION What force is indicated in the diagram?

26. ANSWER Compression

27. QUESTION What is this symbol?

28. ANSWER Poisonous or toxic material causing SERIOUS or IMMEDIATE effects.

29. QUESTION A mixture has ______ or more types of particles?

30. ANSWER 2

31. QUESTION Consider: Sun  grass  mouse  snake What is this called?

32. ANSWER A food chain

33. QUESTION Consider: Sun  grass  mouse  snake What is the producer?

34. ANSWER Grass

35. QUESTION Consider: Sun  grass  mouse  owl  snake What is the top consumer?

36. ANSWER snake

37. QUESTION A solution with lots of solute (a very dark glass of iced tea) is called _______.

38. ANSWER Concentrated

39. QUESTION What term is used to describe the study of the earth?

40. ANSWER Geology

41. QUESTION A solution with lots of solute (a very dark glass of iced tea) is called _______.

42. ANSWER Concentrated

43. QUESTION The pyramids or a mountain is considered to be this type of structure.

44. ANSWER mass

45. QUESTION Soil is made of these main parts.

46. ANSWER Weathered rock (mineral fragments) Water Organic Material (Humus) Air

47. QUESTION The three phases or states of matter are...

48. ANSWER SOLIDS LIQUIDS GASES

49. QUESTION Calculate the structural efficiency of the following building. MASS of BUILDING = 10 000 kg MAXIMUM LOAD = 500 000 kg

50. ANSWER SE = max load / dead load = 500 000 kg = 50 10 000 kg

51. QUESTION What is the method of heat transfer associated with fluids?

52. ANSWER convection

53. QUESTION What is the method of heat transfer associated with fluids?

54. ANSWER convection

55. QUESTION What term is used to describe the study of energy & forces?

56. ANSWER Physics

57. QUESTION What type of structure is used most often for sports complexes?

58. ANSWER Shell structures

59. QUESTION What process do we as animals make energy?

60. ANSWER (Cellular) Respiration

61. QUESTION How many km in 6500 m?

62. ANSWER 6.5 km

63. QUESTION Consider a glass of orange juice. What process may be used to separate the pulp from the juice ?

64. ANSWER Filtration

65. QUESTION What is this symbol?

66. ANSWER Oxidizing material

67. QUESTION Consider a glass of orange juice. What process may be used to separate the pulp from the juice ?

68. ANSWER Filtration

69. QUESTION What are some specific ways trees (and other plants) are important for us or other animals?

70. ANSWER Lumber for building Shade Oxygen Food source for animals (and us) Habitats for animals

71. QUESTION What are these?

72. ANSWER Erlenmeyer flasks