phases and eclipses

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Page 1: Phases And  Eclipses
Page 2: Phases And  Eclipses
Page 3: Phases And  Eclipses

The terminator is the moving boundary between day and night. Notice that it moves right to left.

The moon does not make its own light. We see it because it reflects light from the sun.

Page 4: Phases And  Eclipses

Daytime on the moon

Night on the moon

Terminator

Page 5: Phases And  Eclipses

Phases of the moon are caused by the angle between the earth, moon, and sun.

Page 6: Phases And  Eclipses

Lunar Phase animation

Another animation

Video clip on phases

Notice that the terminator is moving right to left.

Page 7: Phases And  Eclipses

Waxing means getting bigger every night.

Waning means getting smaller every night.

Crescent means less than half the surface of the moon facing you is lit by the sun.

Gibbous means more than half of the surface of the moon facing you is lit by the sun.

Page 8: Phases And  Eclipses

Review this diagram and name the phases on the following slides!

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Waning crescent

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Waxing gibbous

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Waxing crescent

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Last quarter

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Waning crescent

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Waning gibbous

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First quarter

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Two kinds:

Lunar eclipsesSolar eclipses Video clip on

eclipses

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Page 18: Phases And  Eclipses

Eclipse animation

Page 19: Phases And  Eclipses

Time lapse photography of a lunar eclipse

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Animation of solar eclipse

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Diamond ring effect just before or after a total solar eclipse.

Page 22: Phases And  Eclipses

This animation shows the relative sizes of the partial and total eclipse areas. The small, black dot is the umbra. You can see why not many people ever see a total eclipse.

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This is a space shuttle photograph of an area of the Earth having a total solar eclipse.

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Link to NASA eclipse pageBe sure to scroll down for a list of upcoming eclipses.