16 What force keeps Earth and the Moon in orbit (light) (gravity) (air resistance)

6 What is the pathway of a planet around the Sun called (axis) (orbit) (solstice)

2 What movement of Earth causes day and night (revolution) (rotation) (gravity)

4 How long does Earth take to complete one rotation (24 hours) (365 days) (12 hours)

11 What happens near the poles during winter (continuous daylight) (continuous darkness) (equal day and night)

18 What happens to gravity as distance between objects increases (gravity increases) (gravity decreases) (gravity stays the same)

17 According to Newton’s law of universal gravitation every object in the universe (repels every other object) (attracts every other object) (moves randomly)

14 What is an equinox (the Sun disappears) (day and night are equal) (gravity becomes weaker)

1 What is the imaginary line that passes through Earth from the North Pole to the South Pole (orbit) (axis) (gravity)

12 What happens near the poles during summer (continuous darkness) (continuous daylight) (short days)

20 On the Moon your weight would be about how much compared to Earth (the same) (twice as much) (one sixth as much)

9 When the Northern Hemisphere is tilted toward the Sun it experiences (winter) (summer) (autumn)