Eclipses: Crash Course Astronomy

What factor limits the number of eclipses per year?

• Distance between the moon and the Earth

• Tilt of the moon's orbit around the Earth

• Distance between the Earth and the sun

• Tilt of the Earth's axis of rotation

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A lunar eclipse occurs when:

• The sun passes between the Earth and the moon.

• The moon passes between the Earth and the sun.

• The moon passes through the Earth's shadow.

• The sun passes through the moon's shadow.

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The moon is brightest during which of these events?

• Total solar eclipse

• Penumbral lunar eclipse

• Annular eclipse

• Total lunar eclipse

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What angle is formed by the sun, the Earth, and the moon during an eclipse?

• 180 degree

• 270 degree

• 90 degree

• 45 degree

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What can you infer about the solar corona?

• It's located fairly close to the Earth

• It's the only part of the sun blocked out during an eclipse

• It's the hottest part of the sun

• It's located at the outermost edge of the sun

Which definition of "umbra" is most accurate?

• Illuminated region of space

• Light from the sun

• Area where light is blocked

• Elapsed time during an eclipse

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When a solar eclipse happens, who can see it?

• Anyone in the Northern Hemisphere

• Anyone in the Southern Hemisphere

• Anyone around the Equator

• Anyone who is in the moon's shadow

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If the moon were larger, the path of totality during a total solar eclipse would be:

• Brighter

• Shorter

• Wider

• Faster

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Which of the following must be visible somewhere during a total eclipse?

• Partial solar eclipse

• Annular eclipse

• Total lunar eclipse

• Penumbral lunar eclipse

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Devices used to observe a solar eclipse _____ the light that reaches your eyes.

• Amplify

• Reduce

• Focus

• Analyze

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