The Earth's orbit is closest to the Sun in January and farthest from the Sun in July. When is the Earth moving the slowest in orbit?
A) Neither January nor July since the orbital speed of the Earth is a constant.
B) January
C) July
D) This occurs twice a year, in April and in October.

Question

Quizplus · Accepted Answer

According to Kepler's second law, the Earth moves slowest in its orbit when it is farthest from the Sun, which occurs in July.

The Earth's Orbit Is Closest to the Sun in January