What is an equinox?

• marks the beginning of fall or spring

• marks the beginning of summer or winter

• motion of one object around another

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What is a rotation?

• motion around an axis

• motion of one object around another

• marks the beginning of fall or spring

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When does the autumn equinox occur in the Northern Hemisphere?

• June 21

• December 21

• March 21

• September 21

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What is a revolution?

• motion around an axis

• marks the beginning of summer or winter

• motion of one object around another

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What is a solstice?

• motion of one object around another

• marks the beginning of fall or spring

• marks the beginning of summer or winter

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What happens during a lunar eclipse?

• Earth casts a shadow on the Moon.

• The Moon casts a shadow on Earth.

• The Sun casts a shadow on Earth and the Moon.

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What two effects does the Moon have on Earth?

• solar eclipses and tides

• seasons and tides

• lunar eclipses and seasons

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High tides are lowest when the Moon is in its phases.

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The Moon is waning when it changes from

• new moon to first quarter

• first quarter to full moon

• full moon to last quarter

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