Unit 5- The Earth-Moon-Sun System

The diagram to the left shows how Earth spins on its axis, causing day and night.

Which term describes the movement shown?

• revolution

• rotation

• orbit

• tilt

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NGSS.MS-ESS1-1

How long does it take Earth to complete one orbit around the sun?

• 1

• 27.3

• one month

• 365 1/4 days

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NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

The phases of the moon are the changing appearances of the moon, as seen from Earth. Which phase happens approximately one week after a third quarter moon?

• New Moon

• Waxing crescent

• Waning Crescent

• First Quarter

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NGSS.MS-ESS1-1

The diagram to the left shows the relative positions of Earth, the moon, and the sun. The moon is shown at four possible positions around Earth.

Which position of the moon could result in a lunar eclipse?

• 1

• 2

• 3

• 4

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NGSS.MS-ESS1-1

Just as Earth moves around the sun, the moon revolves around Earth. About how many Earth days does it take for the moon to travel around Earth?

• About 7 days

• About 28 days

• About 180 days

• About 365 Days

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NGSS.MS-ESS1-1

The phases of the moon are the regular changes in how the moon looks from Earth. In which phase is the moon not visible from Earth?

• Full moon

• Waxing gibbus

• New Moon

• Waning Crescent

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NGSS.MS-ESS1-1

Although half of the moon is always illuminated, usually only a portion of the illuminated side is visible from Earth. The diagram below presents the relative positions of Earth, the sun, and the moon. The positions of the moon are labeled 1–8.

Which of the moons in the figure are in a crescent phase?

• 2 and 4

• 2 and 8

• 4 and 6

• 6 and 8

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NGSS.MS-ESS1-1

Eclipses are predictable, solar system events. The answer choices below list relative positions of Earth, the sun, and the moon. Which list represents the position of Earth, the sun, and the moon during a lunar eclipse?

• 1. sun, moon, Earth

• 1. Earth, sun, moon

• 1. sun, Earth, moon

• 1. moon, sun, Earth

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NGSS.MS-ESS1-1

When Earth moves into the moon’s shadow, a solar eclipse takes place. Which phase represents the appearance of the moon during a solar eclipse?

• 1. new moon

• 1. third quarter

• 1. full moon

• 1. waning gibbous

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NGSS.MS-ESS1-1

Which gravitational pull has the greatest effect on tides?

• 1. the sun’s gravitational pull on the moon

• 1. Earth’s gravitational pull on the moon

• 1. the moon’s gravitational pull on Earth

• 1. the sun’s gravitational pull on Earth

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