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1 What is the imaginary line that passes through Earth from the North Pole to the South Pole (orbit) (axis) (gravity)
axis
2 What movement of Earth causes day and night (revolution) (rotation) (gravity)
rotation
3 What movement of Earth causes the four seasons (rotation) (revolution) (inertia)
revolution
4 How long does Earth take to complete one rotation (24 hours) (365 days) (12 hours)
24 hours
5 How long does Earth take to complete one revolution around the Sun (24 hours) (365 ¼ days) (30 days)
365 ¼ days
6 What is the pathway of a planet around the Sun called (axis) (orbit) (solstice)
orbit
7 Why do we have seasons on Earth (Earth changes speed) (Earth’s axis is tilted and Earth revolves around the Sun) (the Moon moves closer)
Earth’s axis is tilted and Earth revolves around the Sun
8 What is the tilt of Earth’s axis (45°) (23.5°) (90°)
23.5°
9 When the Northern Hemisphere is tilted toward the Sun it experiences (winter) (summer) (autumn)
summer
10 When the Northern Hemisphere is tilted away from the Sun it experiences (spring) (summer) (winter)
winter
11 What happens near the poles during winter (continuous daylight) (continuous darkness) (equal day and night)
continuous darkness
12 What happens near the poles during summer (continuous darkness) (continuous daylight) (short days)
continuous daylight
13 What is a solstice (day and night are equal) (Earth stops rotating) (a hemisphere is most tilted toward or away from the Sun)
a hemisphere is most tilted toward or away from the Sun
14 What is an equinox (the Sun disappears) (day and night are equal) (gravity becomes weaker)
day and night are equal
15 During an equinox the Sun is directly over the (North Pole) (South Pole) (equator)
equator
16 What force keeps Earth and the Moon in orbit (light) (gravity) (air resistance)
gravity
