What motion of Earth causes the yearly cycle of the seasons?
Why does a year on Earth have 365 ¼ days?
In which month(s) is Earth: a. closest to the Sun? b. farthest from the Sun?
Based on what you have observed about the distance from Earth to the Sun, does the distance from Earth to the Sun determine the seasons? Explain the evidence for your answer.
In what month is the Northern Hemisphere most tilted toward the Sun?
In what month is the Northern Hemisphere most tilted away from the Sun?
Explain how the tilt of the Earth affects the seasons and daylight length.