Please answer on separate sheets of paper. For the short answers, please use complete
sentences. Full points will be given for
complete sentences and clarity of the response.
60 points total
1. Earth
Geometry
A. Draw a simple diagram of the Earth (no
continents, just a circle) with the axis and major lines of latitude (equator,
two tropics, and Arctic and Antarctic
circles). Draw a point at the center of
the Earth and show how latitude at San Diego is
the angle between San Diego
B. On the same drawing, add the light rays
coming from the sun on the equinox, and show how latitude as measured from the
Earth’s center is equal to the angle between straight up and the sun’s rays
(the solar zenith angle). (10 pts)
C. On the same drawing, add an arrow showing the
direction of the Earth’s rotation. (5 pts)
2.
Draw a picture showing how insolation at the Earth's surface depends on
the angle of the sun's rays, and write 1-2 sentences explaining the picture (15
pts).
3.
What range of latitudes experiences 24-hour daylight on the
summer solstice?
(5 points)
4. What
range of latitudes has the sun directly overhead twice per year? (5 points)
5. Is
this statement true? (3 points). Explain (7 points). The sun is always higher in the sky at noon
in Florida compared to North Dakota, so the daily total solar radiation is
always higher in Florida.
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