Answer:
A lunar eclipse is caused when the Earth is positioned in between the Sun and the Moon, and the Moon is forced to hide in the Earth's shadow.
Step-by-step explanation:
There are total and partial lunar eclipses. These both occur when the Moon hides within the umbra shadow of the Earth. Because this is a dark shadow, it will shield the Moon from the Sun either entirely totally or partially partial.
Penumbral lunar eclipses occur when the Moon is shielded by the penumbral shadow of Earth. This shadow is the outer shadow of the Earth caused by its alignment with the Sun between the Moon. Lunar eclipses occur several times a year.