Unit A: Earth, Moon and Sun

The daily motion of the Sun, Moon and stars is called:

• Direct motion
• Diurnal motion
• Daily motion
• Celestial motion

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NGSS.MS-ESS1-1

As seen from New York, most stars set in the (a)  

• North
• East
• South
• West

In its daily motion across the sky, in the Northern Hemisphere, the Sun reaches its highest point in the (a)   direction.

• North
• East
• South
• West

What causes seasons on Earth?

• The tilt of Earth’s axis
• The distance of Earth from the Sun
• The amount of cloud cover
• The brightness of the Sun

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NGSS.MS-ESS1-1

The smooth, dark areas on the Moon are best described as:

• Craters
• Dust
• Lava plains
• Mountains

Which of the following statements about the Moon is true?

• It does not rotate
• It rotates once every Earth day
• Its dark side always faces away from Earth
• From Earth we always see the same side of the Moon

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The Moon goes through all of its phases approximately:​ (a)  

• Once a week
• Once a day
• Once a year
• Once a month

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Match the following moon phases with their brightness levels.

• The phase when half of the moon is visible and decreasing in visibility.

• Last quarter

• The phase when the moon is not visible from Earth.

• New moon

• The phase when half of the moon is visible and increasing in visibility.

• Full moon

• The phase when the entire face of the moon is illuminated.

• First quarter

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A solar eclipse can only occur at what phase of the Moon?

• New moon
• First quarter
• Full moon
• Last quarter

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A lunar eclipse can only occur at what phase of the Moon?

• New moon
• First quarter
• Full moon
• Last quarter

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NGSS.MS-ESS1-1