GED Exam Prep: Science

Category - GED Science

Which of the following best describes why the earth has seasons?
  1. The earth’s tilt
  2. The earth’s revolution around the sun
  3. The relationship between the earth and the moon
  4. Both A and B
Explanation
Answer: D - Both the earth’s tilt and its revolution around the sun affect the earth’s seasons. The tilt of the earth at 23.5 degrees affects which part of the planet will be closest to the sun. At the same time, the revolution affects its distance from the sun and primary heat source, which affects our weather.
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