II' Eclipses

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• II. Eclipses
• A. Lunar Eclipses occurs at full moon when
  the moon passes through the shadow of
  the earth
• 1. umbra region of total shadow
• 2. penumbra region of partial shadow
• 3. at total eclipse the moon does not
  disappear completely, light is
  refracted through earths atmosphere
  ? copper glow
• 4. 1 to 2 each year

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• 5. Why doesnt a lunar eclipse occur every
  full moon?
• a. The moons orbit is inclined at 5 toward
  the earths orbit.
• b. the moon usually travels above or below the
  earths shadow

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B. Solar Eclipses the moons angular
diameter covers the sun. The moon moves
between the earth and sun (New moon) 1. total
eclipse can be see from path of totality 2.
darkness lasts a few minutes 3. annular eclipse
moon is a little too small to cover
the sun, umbral shadow does not reach earth
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