Why does the moon change?

What causes the moon to appear as if it's changing shape?

• The Earth's shadow covers different parts of the moon.

• Our view of the moon changes as it orbits Earth.

• The sun moves closer to and farther from the moon.

• The moon is actually changing shape.

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How many main phases does the moon go through in its cycle?

• Ten

• Eight

• Six

• Four

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What is the first phase of the moon called?

• Quarter moon

• Crescent moon

• New moon

• Full moon

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During which phase is only a small sliver of the moon visible?

• Full moon

• New moon

• Crescent moon

• Quarter moon

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How long does it take for the moon to orbit the Earth?

• One week

• One year

• One month

• Two weeks

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What does the term 'gibbous' describe in the context of moon phases?

• The moon when it's not visible from Earth.

• A moon that is less than half illuminated.

• A moon that is more than half but not fully illuminated.

• The fully illuminated moon.

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What phase is the moon in when it's fully lit up?

• Full moon

• New moon

• Quarter moon

• Gibbous moon

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Which moon phase comes after the full moon as it appears to shrink?

• New moon

• Crescent moon

• Quarter moon

• Gibbous moon

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Where does the word 'month' originate from?

• It's derived from the word 'moon'.

• It comes from the Latin word for 'cycle'.

• It's named after a Roman god of time.

• It has no relation to celestial bodies.

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NGSS.MS-ESS1-1

What should you do to observe the changing phases of the moon?

• Only observe the moon during the new moon phase.

• Watch the moon through a telescope every night.

• Make drawings to track its shape over time.

• Check the moon phase in the newspaper.

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