Remember Lunar night lasts about 14 Earth days. From radioactive dating, we know that meteorite impact rates dropped suddenly 3.9 billion years ago. Maria were formed 3.9-4.1 billion years ago and therefore have far less craters. Things stay the same for a very long time. Lunar surface tells us information about planet formation.
Meteors mostly burn up in Earth's atmosphere.
Moon has no atmosphere, so meteorites fall to surface as small as microscopic sizes. Detect very weak moonquakes. Interactions between the Earth and Moon Tides Effects of gravity between Earth, Moon and Sun. Height of the ocean changes by up to a few meters, depending on time of year and location. Most noticible on coasts.