If the Sun passes directly over your head on at least one day per year,then you:
A) are within 66° of the equator.
B) are somewhere within 23° of the equator.
C) could be anywhere because this event occurs at least once per year at any location on Earth.
D) must be exactly on the equator.

Question

Quizplus · Accepted Answer

The Sun passes directly over the head (at zenith) only at the equator on the two equinox days (March and September). Therefore, if it passes over the head on at least one day per year, the location must be within 23.5 degrees of the equator (23.5 = tilt of Earth's axis). This range is called the tropics of Cancer (north of the equator) and Capricorn (south of the equator). Therefore, choice B is the best answer.

If the Sun Passes Directly Over Your Head on at Least