An eclipse of the Moon (lunar eclipse) as seen from Earth, happens when
A)the hot luminous Moon suddenly cools and stops emitting light.
B)the Moon passes between Earth and the Sun.
C)the Earth is between the Moon and the Sun.
D)the Moon is 90 degrees from the direction of the Sun.

Question

Quizplus · Accepted Answer

During a lunar eclipse, the Earth is between the Moon and the Sun, so the Earth's shadow falls on the Moon. This causes the Moon to appear reddish in color, hence the term "blood moon." Option A is incorrect because the Moon does not stop emitting light, it is simply in the Earth's shadow. Option B refers to a solar eclipse, where the Moon passes between Earth and the Sun. Option D is incorrect because the Moon has to be in alignment with the Sun and Earth for a lunar eclipse to occur, not perpendicular to the Sun.

An Eclipse of the Moon (Lunar Eclipse) as Seen from Earth