GEOG 100 HOMEWORK HELP ONLY MESSAGE IF AVAILABLE FOR HELP NOW

GEOG 101: Earth's Physical Environment

Instructor: T Biggs

HW #1

DUE Thursday FEB 13 beginning of class

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 and the equator. (10 pts)

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.