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Earth’s Motions

Answer Sheet

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True (A) / False (B)

1. _____
2. _____
3. _____
4. _____
5. _____
6. _____
7. _____
8. _____
9. _____
10. _____
11. _____
12. _____
13. _____
14. _____
15. _____
16. _____
17. _____

Matching

1. _____
2. _____
3. _____
4. _____

Matching

1. _____
2. _____
3. _____
4. _____
5. _____
6. _____
7. _____

Matching

1. _____
2. _____
3. _____
4. ____

Matching

1. _____
2. _____
3. _____
4. _____
5. _____
6. _____

Fill in the blank

1. ______
2. ______
3. ______
4. ______
5. ______
6. ______
7. ______
8. ______
9. ______
10. ______
11. ______
12. ______
13. ______
14. ______
15. ______
16. ______
17. ______

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Earth’s Motions

True or False (A or B)

1. The sun is in the very center of earth’s orbit.

2. The earth’s orbital velocity changes as it moves around the sun.

3. The earth is at aphelion in July.

4. The closer a planet is to the sun, the faster it moves.

5. The part of the earth facing away from the sun has night.

6. Aphelion is the closest point of an orbit around the sun.

7. In the Northern Hemisphere, between June 21 and September 21, days become longer.

8. The earth rotates from east to west (clockwise) on its axis.

9. On June 21, the equator has 12 hours of day and 12 hours of night.

10. On June 21, the Northern Hemisphere receives the most indirect rays from the sun.

11. As you go to the west (ie- Pittsburgh to Los Angeles), the time becomes later.

12. Time zones run vertically from North to South.

13. The starting time line is called the International Date Line.

14. The earth revolves around its axis.

15. The earth is closest to the sun in July.

16. Time in London is later than time in Pittsburgh.

17. There are 30 time zones around the earth.

Matching: Write “N” for Northern Hemisphere or “S” for Southern Hemisphere

18. On June 21, the _____ hemisphere tilts away from the sun.

19. On June 21, the _____hemisphere has more hours of sunlight

20. On December 21, the _____ hemisphere leans away from the sun.

21. On December 21, the _____hemisphere has more hours of sunlight.

Matching: The diagram above shows the Earth in its orbit around the sun. Match each description below with the corresponding position of Earth.

22. position of earth on December 21st

23. longest day of the year in the Northern Hemisphere

24. vernal equinox

25. winter solstice in Northern Hemisphere

26. position of the earth June 21st

27. autumnal equinox

28. position with day and night of equal length in Pittsburgh.

Matching : Write “I” for Indirect light rays and “D” for Direct light rays.

29. These rays “spread out” more.

30. These rays are the strongest.

31. Winter rays are _____ rays.

32. Rays with a steeper angle of incidence are more ______rays.

Matching: Write “A” if the observation is caused by Earth’s Rotation. Write “B” if the observation is a result of Earth’s Revolution.

33. The sun rises in the morning.

34. Different constellations are out in the nighttime sky month after month after month.

35. A full moon is right overhead at midnight.

36. Pittsburgh’s average low temperature in Marchwas28o.

37. It is dark in Pittsburgh, PA, but the sun is still above the horizon in Sacramento, CA.

38. Spring turns into summer.

Completion: Fill in the blank on your answer sheetwith the correct response.

39. On September 22, every place on earth has _____ hours of daylight.

40. How long does it take the earth to make one trip around the sun?

41. At any given time, how much of the earth is facing the sun?

42. How many kilometers is the earth from the sun?

43. What name is given to the shape of the earth’s nearly circular orbit?

44. What is the name of the wobble of Earth’s axis caused by the force of gravity from

the sun and moon on Earth’s equatorial bulge.

45. How many degrees are there between meridians (time zones)?

46. How long does it take the earth to make one complete rotation?

47. Day and night depend on the earth’s _____.

48. The earth is divided into _____ time zones.

49. The date changes when you cross the _____.

50. The earth _____ around the sun.

51. Which direction does the earth rotate?

On your answer sheet, write the names given to the following dates in the Northern Hemisphere:

52. December 21

53. September 22

54. March 20

55. June 21

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