Exploring Solar and Lunar Eclipses

The video explains solar and lunar eclipses, detailing how they occur and why they don't happen every month. It covers the moon's orbit, nodes, and the types of solar eclipses, including total and annular. The video also discusses the future of eclipses and the atmospheric effects during lunar eclipses, such as the red appearance of the moon.

What happens during a solar eclipse?

• The moon's shadow falls on Earth.

• The Earth's shadow falls on the moon.

• The sun's shadow falls on the moon.

• The moon's shadow falls on the sun.

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What is the umbra?

• The shadow of the sun.

• The darkest part of the shadow.

• The lightest part of the shadow.

• The shadow of the moon.

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Why don't we experience eclipses every month?

• The Earth is too small.

• The sun is too far away.

• The moon's orbit is not aligned with Earth's orbit around the sun.

• The moon is too small.

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What are nodes in the context of eclipses?

• Points where the moon's orbit crosses the sun's plane.

• Points where the sun's orbit crosses the Earth's plane.

• Points where the sun's shadow crosses the moon's plane.

• Points where the Earth's orbit crosses the moon's plane.

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What causes a total solar eclipse?

• The moon completely covers the Earth from a specific point on the sun.

• The Earth completely covers the sun from a specific point on the moon.

• The sun completely covers the moon from a specific point on Earth.

• The moon completely covers the sun from a specific point on Earth.

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NGSS.MS-ESS1-1

What is an annular solar eclipse?

• A lunar eclipse where the moon turns red.

• A solar eclipse where the moon completely covers the sun.

• A lunar eclipse where the moon completely covers the sun.

• A solar eclipse where a ring of sunlight remains around the moon.

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How do we know the moon is moving away from Earth?

• Astronomers bounce lasers off mirrors left on the moon.

• Astronomers measure the moon's shadow.

• Astronomers use telescopes to measure the distance.

• Astronomers observe the moon's orbit.

How long does the totality of a solar eclipse last?

• No longer than 20 minutes.

• No longer than 7.5 minutes.

• No longer than 10 minutes.

• No longer than 15 minutes.

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How long can a total lunar eclipse last?

• Up to 1 hour and 40 minutes.

• Up to 2 hours.

• Up to 3 hours.

• Up to 4 hours.

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Why does the moon turn red during a total lunar eclipse?

• The Earth's atmosphere scatters shorter blue wavelengths of light.

• The Earth's atmosphere scatters longer red wavelengths of light.

• The moon's atmosphere scatters shorter blue wavelengths of light.

• The sun's atmosphere scatters shorter blue wavelengths of light.

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NGSS.MS-ESS1-1