Earth Science Regents Moon Sun

Which statement best explains why different phases of the Moon can be observed from the Earth?¿Qué enunciado explica mejor por qué se pueden observar diferentes fases de la Luna desde la Tierra?

• The size of the Earth's shadow falling on the Moon changes.

• The Moon moves into different parts of the Earth's shadow.

• Differing amounts of the Moon's sunlit surface are seen because the Moon revolves around the Earth.

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The diagram below shows a model of the Moon’s orbit around Earth. Numbers 1, 2, 3, and 4 represent four positions in the Moon’s orbit.

What is the approximate length of time the Moon takes to travel from position 4 to position 2?

• 1 day

• 30 days

• 15 days

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NGSS.MS-ESS1-1

If the distance between the Moon and Earth were double its present distance, the Moon’s cycle of phases would occur

• in reverse order and more slowly

• in reverse order and more quickly

• in the same order but more slowly

• in the same order but more quickly

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For observers on Earth, which phase of the Moon is represented by the diagram?

• Full moon

• Quarter moon

• New moon

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Why does the Moon have different phases when viewed by an observer on Earth?

• The moon rotates on an axis

• The earth's orbit is circular

• The moon revolves around the earth

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Which Moon phase appears highest in the sky at midnight to an observer on Earth?

• full moon

• new moon

• first quarter

• last quarter

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The time required for the Moon to complete one cycle of phases is about one...

• day

• week

• month

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As the Moon's phase changes from first quarter to last quarter, the visible portion of the Moon as observed from Earth will...

• increase then decrease

• decrease then increase

• increase only

• decrease only

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The diagram below shows the Moon orbiting Earth as viewed from space above the North Pole. The Moon is shown at eight different positions in its orbit.

At which two positions of the Moon is an eclipse of the Sun or Moon possible?

• full moon and new moon

• First and second quarter moon

• waxing and waning moon

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NGSS.MS-ESS1-1

The term "Gibbous" is associated with ....

• more light than darkness on the moon

• more darkness than light on the moon

• equal amounts of light and darkness on the moon

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