A lunar eclipse is the event when the moon happens to sail into the
Earth's shadow. When that happens, the Full Moon turns dark, and
it can stay that way for a couple of hours. Everybody on the night side
of Earth who happens to notice it says "Ooohh ! Look ! A lunar eclipse !".
Then most of them go back to bed, or go on about their business.
It happens a few times a year.
Now get busy on the rest of the assignment. Take it one step at a time
and you'll get through it just fine. You'll also learn stuff. Such a deal !
Here's a suggestion: If you don't have books to find the rest of the
information you need, and you're planning to get it all on-line, then
get off of Brainly right now, and start using search engines to find
articles and read about each item. It'll go fast.
If there are other kids in your class who can do it, there's no reason
you can't. And if the teacher didn't think you could do it, it wouldn't
have been assigned.
Good luck !