Why are there seasons?

1) How does the volume of the sun compare with that of the earth? How does the density of the sun compare with that of the earth?

2) Changes in solar activity can affect the earth. Give an example.

3) What is an equinox? Approximately when do they occur?

4) What is a solstice? Approximately when do they occur?

5) What two points on the surface of the earth are at the ends of the axis of rotation of the earth?

6) Describe the direction of rotation of the earth as it would appear from a satellite above the South Pole?

7) Which location, Nome, Alaska or Miami, Florida, will experience more hours of daylight on the day of the vernal equinox?

8) How many hours of daylight does the South Pole receive during the winter solstice?

9) On the day of the vernal equinox, how will the amount of solar energy per unit area received by Nome, Alaska compare with that received by Miami, Florida?

10) Give two basic reasons why it is colder in Cincinnati in the winter than it is in the summer. Your answers should relate to solar energy.