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Intro

Objective 05/16/2013. Describe the difference between a solar and lunar eclipse. Intro. What is an eclipse? DO NOW - Take out Signed Progress Reports. Eclipses. Eclipse Umbra Penumbra. An event in which the shadow of one celestial object falls on another To cover up

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Intro

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Presentation Transcript

  1. Objective 05/16/2013 Describe the difference between a solar and lunar eclipse. Intro What is an eclipse? DO NOW - Take out Signed Progress Reports

  2. Eclipses

  3. Eclipse • Umbra • Penumbra • An event in which the shadow of one celestial object falls on another • To cover up • Inner, darker part of a shadow • Outer, lighter part of a shadow

  4. Lunar eclipse • Moon passes into the Earth’s shadow

  5. Solar eclipse • Moon completely covers the Sun and the Moon’s shadow falls on Earth

  6. What is bigger, the Sun or Moon? • Why does it look like the Sun and Moon are the same size during a solar eclipse? • Sun • Sun is 400 times larger than the Moon • Sun is 400 times farther away from the Moon • Thus the Moon and Sun look like the same size

  7. Why don’t we have solar and lunar eclipse every month? • Moon’s orbit is tilted • So, the Moon’s shadow does not always fall on Earth • And the Moon does not always go through the Earth’s shadow

  8. Objective 05/04/11 Describe the difference between a solar and lunar eclipse. Outro Why doesn’t the entire Earth see a total solar eclipse?

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