6.E.1 Astronomy Review

Earth's rotation takes about

• 365 days

• 6 months

• 24 hours

• 1 month

Answer explanation

It takes the Earth almost 24 hours to complete one rotation on its axis. This is what causes night and day!

Select the statement that is TRUE.

• The moon produces its own light.

• A full moon is when we are able to see the entire lit side of the moon.

• The moon never changes its position relative to the Sun.

• The moon is twice as large as the Earth.

Answer explanation

What we see depends on what portion of the moon is illuminated, or lit up. During a full moon, we are able to see the entire lit side of the moon!

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Day and night are caused by

• the tilt of Earth's axis

• Earth's revolution around the sun

• eclipses

• Earth's rotation on its axis

Answer explanation

When Earth rotates on its axis, different sections of the Earth are facing the Sun

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One complete revolution of Earth around the Sun takes about

• 29.5 days

• one season

• 365 1/4 days

• 88 days

Answer explanation

A revolution is one complete journey around the sun

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Earth has seasons because

• it rotates on its axis

• the distance between Earth and the Sun changes

• it is tilted on its axis and orbits the Sun

• the temperature of the Sun changes

Answer explanation

When your location on Earth is tilted toward the sun, you experience summer. When you are on the portion of Earth tilted away from the sun, you experience winter!

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When the north end of Earth's axis is tilted toward the sun, North America will experience

• more indirect rays and shorter days

• more indirect rays and longer days

• more direct rays and shorter days

• more direct rays and longer days

Answer explanation

Watch this video if you want an explanation!

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What season is shown at letter A in the Northern Hemisphere?

• spring

• summer

• fall

• winter

Answer explanation

This is when the northern hemisphere is tilted AWAY from the sun.

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What season is shown at letter B in the Northern Hemisphere?

• spring

• summer

• fall

• winter

Answer explanation

This is in between the summer solstice and winter solstice, called the vernal equinox.

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What season is shown at letter D in the Northern Hemisphere?

• spring

• summer

• fall

• winter

Answer explanation

This is halfway between the winter & summer solstices!

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An equinox occurs when

• neither end of Earth's axis is tilted toward or away from the sun

• the north end of Earth's axis is tilted away from the sun

• the north end of Earth's axis is tilted toward the sun

• Earth's axis is parallel to the sun's rays

Answer explanation

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