Earth Moon System Andie
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Transcript of Earth Moon System Andie
![Page 1: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/1.jpg)
![Page 2: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/2.jpg)
Earth rotates on its axis once every 24 hours.
When your part of the earth faces the sun, you experience day. What happens to cause night? Video clip on day and night
![Page 3: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/3.jpg)
Sun appears to rise in the east and set in the west because the Earth turns on its axis from west to east.
![Page 4: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/4.jpg)
The time it takes to make one trip around the sun is a year. That is one revolution.
Click here for an animation of a year.
![Page 5: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/5.jpg)
rotation
revolution
![Page 6: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/6.jpg)
It takes 365.24 days for Earth to go around the sun one time. This means we are not at the same place in our orbit as we began. Because of the 0.24 equals about ¼ of a day, we add a day to our calendar every 4 years.
2008 was a leap year so we had a February 29th. Our next February 29th will be in 2012.
![Page 7: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/7.jpg)
Video clip on seasons
![Page 8: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/8.jpg)
No tilt – no seasons
![Page 9: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/9.jpg)
Summer solstice Winter solstice
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Links to animations below
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Many people believe we have summer because we are closer to the sun in the summer. Look at the diagram and explain why they are wrong!
![Page 13: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/13.jpg)
Bad Astronomy: Only on the day of the Vernal (spring) Equinox, can you stand a raw egg on its end.
Good astronomy: If you can stand a raw egg on end, it has nothing to do with the Equinox.
How it works: This has to be one of the silliest misconceptions around, and it never seems to die. Every year, without fail, some TV station broadcasts a news segment showing local schoolchildren standing eggs on end on the first day of spring. Usually, the newscaster will make some vague mention about how this works, but it is rarely specific, and never holds up to too much scrutiny.
![Page 14: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/14.jpg)
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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 17: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/17.jpg)
Daytime on the moon
Night on the moon
TerminatorRotation/revolution
![Page 18: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/18.jpg)
Phases of the moon are caused by the angle between the earth, moon, and sun.
![Page 19: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/19.jpg)
Lunar Phase animation
Another animation
Video clip on phases
Notice that the terminator is moving right to left.
![Page 20: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/20.jpg)
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 21: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/21.jpg)
Review this diagram and name the phases on the following slides!
![Page 22: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/22.jpg)
Waning crescent
![Page 23: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/23.jpg)
Waxing gibbous
![Page 24: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/24.jpg)
Waxing crescent
![Page 25: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/25.jpg)
Last quarter
![Page 26: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/26.jpg)
Waning crescent
![Page 27: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/27.jpg)
Waning gibbous
![Page 28: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/28.jpg)
First quarter
![Page 29: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/29.jpg)
Two kinds:
Lunar eclipsesSolar eclipses Video clip on
eclipses
![Page 30: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/30.jpg)
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Eclipse animation
![Page 32: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/32.jpg)
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.
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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.
![Page 36: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/36.jpg)
This is a space shuttle photograph of an area of the Earth having a total solar eclipse.
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Types of Solar Eclipses1. Total Solar Eclipses occur when the umbra of the Moon's
shadow touches a region on the surface of the Earth. 2. Partial Solar Eclipses occur when the penumbra of the
Moon's shadow passes over a region on the Earth's surface.
3. Annular Solar Eclipses occur when a region on the Earth's surface is in line with the umbra, but the distances are such that the tip of the umbra does not reach the Earth's surface.
![Page 38: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/38.jpg)
Link to NASA eclipse pageBe sure to scroll down for a list of upcoming eclipses.
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This is a review of tides since we studied them already!
![Page 41: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/41.jpg)
Video clip on tides
Watch the change in water level in the Bay of Fundy in Canada.
This happens two times a day because there are two high tides and two low tides each day.
![Page 42: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/42.jpg)
Notice that every six hours there is a high or low tide.
If high tide occurs today at 6:00 am in Savannah, GA, what time will be low tide? When will the next high tide occur?
![Page 43: Earth Moon System Andie](https://reader038.fdocuments.in/reader038/viewer/2022110119/5564a91dd8b42a366c8b4fc0/html5/thumbnails/43.jpg)
Because the sun also affects the tides, there are times with the sun and move work against each other and times when their forces are added together.
Video clip on sun and tides
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