Unit 3: Outer Space Review

Seasonal changes are primarily due to what?

• the rotation of the Earth on its axis.

• the gravitational pull of the moon on the Earth.

• the revolution of the moon around the Earth.

• the tilt of the Earth’s axis.

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What causes our day/night cycle on Earth?

• the gravitational pull of the moon on the Earth

• the revolution of the moon around the Earth

• the rotation of the Earth on its axis

• the tilt of the Earth’s axis

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Tides are primarily due to what?

• the rotation of the Earth on its axis.

• the gravitational pull of the moon on the Earth.

• the revolution of the moon around the Earth.

• the tilt of the Earth’s axis.

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Why does the moon exert a greater influence on the Earth’s tides than the Sun?

• It is magnetic

• It is bigger

• It is closer to Earth

• It has different phases

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When do we experience equal amounts of daylight and darkness?

• solstices

• equinoxes

• new moon

• full moon

If Earth’s spin on its axis was twice as fast as what it currently is, how would our world be changed?

• Our years would be twice as long

• Our days would be twice as long

• Our years would be half as long

• Our days would be half as long

Why can't we see a new moon?

• It's invisible

• It's hidden behind Venus

• It's in Earth's shadow

• The side of the moon that is dark faces the Earth. Sun is behind the moon

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What season is it in the northern hemisphere when the southern hemisphere is tilted towards the sun?

• spring

• summer

• fall

• winter

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What type of eclipse is this?

• Solar eclipse

• Lunar eclipse

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A lunar eclipse doesn't happen every month because of what?

• sometimes a full moon does not occur.

• the Moon always keeps the same side toward the Earth.

• the Moon's orbit is slightly tilted and is not always lined up correctly.

• because of the lunar phases.

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