What would happen to the earth of the moon suddenly got hit by a meteor?
The moon gets hit by meteors all the time. What do you think all those craters are? I guess you mean a big one? Do you? If so, you need to be more explicit in your question. You obviously know very little about meteoroids and asteroids, except what you read in tabloids and on the internet, or what kids spread around. The moon has some pretty massive craters caused by some large impacts in the past. The Earth is still here. Life is still here. Over the course of the last few millions years, nothing hitting moon will have unduly affected the Earth. Most of the asteroids that come close to the Earth/moon system are only meters to several kilometers wide. The bigger ones would cause havoc on Earth, but are very rare. But even if an asteroid of a few kms wide hit the moon, the worst that would happen on Earth would be a fantastic meteor show from the debris kicked up by the explosion on the moon. I advise reading some real science and not hype pseudo-science.
