Question

Why don't eclipses occur every month?

A. The moon's orbit is tilted
B. The moon's orbit is elliptical
C. It takes more than a month for the moon to orbit the Earth
D. The moon's distance from the Earth changes

Answer 1

A - moons orbit is tilted

Answer 2

A

Answer 3

A. The moon's orbit is tilted

Answer 4

The moon's orbit around earth is tilted to the earth's orbit around the sun. This means that there are only two positions where sun, moon and Earth line up. These are called 'nodes'. Only when sun is at one node and moon is at the other, we get lunar eclipse. This line-up happens rarely.

Answer 5

the term 'month' relates to the lunar calendar, its a 'moon'th, roughly the time it takes to make a lunar cycle. just saying