2. THIS IS
Jeopardy

3. With
Your
Host...
Mr. Cloud!

4. Evidence for Revolution
Jeopardy
Evidence for Revolution
The Seasons
Apparent Motions
Everything Moon!
Kepler’s Laws
WILD!!!
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5. Name Kepler’s First Law of Planetary Motion

6. Law of Ellipses
A 100

7. What is the eccentricity of an ellipse that
has the following dimensions?
Distance between foci = 5 cm
Length of Major axis = 26cm
A 200

8. E = d/L
E = 5cm/26cm = .192
A 200

9. Name the term used to describe Earth when it is closest to the sun.

10. Perihelion
A 300

11. Name and describe Kepler’s Second Law of Planetary Motion

12. Law of Equal Areas
- Equal areas are swept in equal amounts of time when an object orbits the sun
A 400

13. Explain how the kinetic and potential energy of a celestial object varies as it revolves round the sun.
Use the terms: perihelion, aphelion, gravity, and velocity in your explanation
A 500

14. Perihelion: Kinetic energy highest, potential lowest
As a celestial object (comet, planet, asteroid) approaches perihelion the effect of gravity rises, causing velocity to increase, therefore transforming the object’s potential energy to kinetic.
Perihelion: Kinetic energy highest, potential lowest
Aphelion: Potential highest, Kinetic lowest
A 500

15. Name one piece of evidence that supports Earth’s revolution.
B 100

16. Seasons, Parallax, Constellations, Doppler Effect, Apparent Diameter
B 100

17. Answer the following in the form of a question!
B 200

18. A group of stars that form a pattern in the night sky that are used to locate celestial objects

19. Explain how the changing diameter of the sun supports the theory that Earth revolves.
B 300

20. The sun’s actual diameter does not change in a cyclic manner
The sun’s actual diameter does not change in a cyclic manner. When the sun appears larger we are closer (perihelion) and when the sun appears smaller Earth is farther (aphelion). This change in apparent diameter would not occur if we were not moving!
B 300

21. Please explain what would happen to Earth if it did not revolve.
B 400

22. One perpetual season all year long!
No change of season
One perpetual season all year long!
B 400

23. Explain how an astronomer can determine the distance a star is away from Earth by using parallax.

24. The larger the parallax shift, the closer a star is away from Earth.
B 500

25. What causes the seasons to change?

26. Earth tilted axis (23.5o)
Earth’s revolution
C 100

27. What latitude is the sun directly overhead on June 21st?

28. Tropic of Cancer
C 200

29. On what date will there be 24 hours of darkness at the South Pole?
C 300

30. June 21st :The Summer Solstice

31. DAILY DOUBLE
DAILY DOUBLE
Place A Wager
C 400

32. How many hours of daylight will Oslo, Norway have on March 21st?

33. 12! Every location on Earth experiences 12 hours of daylight and darkness on the Equinox!

34. Four celestial spheres, A, B, C, and D, are depicted above
Four celestial spheres, A, B, C, and D, are depicted above. Each sphere represents a different location. Which sphere depicts the apparent motion of the sun on June 21st in New Zealand? Please explain.
C 500

35. Location D
The noontime sun is located in the northern sky. In the southern hemisphere an observer would have to look north to see the noontime sun.
C 500

36. How does the length of the sun’s arc across the sky relate to the length of day?

37. Longer the arc, the longer the day!

38. What direction would a person have to face to the see the noontime sun in NYS?

39. South!
D 200

40. Answer the following in the form of a question!
D 300

41. Stars that complete one full circle about Polaris in 24 hours.
D 300

42. What does the term ‘planet’ actually mean?

43. Wanderer
D 400

44. How did the ancient Babylonian civilization properly sequence the planets?

45. Period of Retrograde Motion

46. What shape do celestial objects make across the sky?

47. Arcs!
E 100

48. At what rate do stars move across the celestial sphere?

49. 15 degrees per hr
E 200

50. Why do planets sometimes appear to move backwards in relation to the background stars?

51. Retrograde motion is caused by planets passing one another
Retrograde motion is caused by planets passing one another. For example, as Earth catches up and passes by Mars, Mars appears to move backwards.
E 300

52. Betelguese rises in the east at 6:00pm and reaches its highest point in the sky at 1:00am. How many degrees has the star travelled?
E 400

53. 7 hrs x 15o/hr = 105o
E 400

54. The celestial hemisphere above represents a particular location on Earth. Where is this person located?
E 500

55. Polaris is directly overhead!
The North Pole! 90o N
Polaris is directly overhead!
E 500

56. Name the hypothesis that explains the origin of the moon.

57. The Giant Impact Hypothesis
F 100

58. How many days does it take the moon to complete one full revolution around Earth?

59. Sidereal Month = 27.3 Days
F 200

60. Name the phase!
F 300

61. F 300

62. How many days does it take the moon to go from lunar phase #1 to lunar phase #2?

63. #1 Full moon
#2 Waning Gibbous
3.6 Days!
F 400

64. Why does it take the moon longer to complete a synodic month than a sidereal month?
F 500

65. Throughout the year, the Earth is revolving around the sun
Throughout the year, the Earth is revolving around the sun. After the completion of one full revolution around the Earth (sidereal month), the moon needs to revolve slightly further to realign with the Earth and sun. This time lag results in a difference of 2.2 days.
F 500

66. The Final Jeopardy Category is:
Please record your wager.
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67. Final Jeopardy Question
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68. Correct Final Jeopardy Response
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69. Thank You for Playing Jeopardy!
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