lecture4 - What causes the seasons? What are the...

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What causes the seasons? What are the differences between days in summer and winter? Longer days stronger Sun in summer than in winter
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How long to go all the way around? d. 1 year c. 1 month b. 1 week 1 day
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There are two ways  to think about the  motion of the skey:   - the C.S. rotates   - or the Earth rotates while the  sky sits still. Sometimes one  works better than the other …
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Questions Where on Earth would stars circle straight overhead around NCP? Where on Earth can you see both poles?
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Latitude and  longitude make a convenient coordinate system for locating objects on the Earth. Altitude and Azimuth give us the direction to look on the celestial sphere.
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Are there stars in the sky during the daytime?
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The altitude of Polaris above the horizon is approximately the same as the observer's latitude in the Northern Hemisphere.
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changing distance from the sun? Distance doesn't matter here!
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lecture4 - What causes the seasons? What are the...

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