I was looking up the diameter of the Earth (as one does) in the Wikipedia and was horrified to see that the article had been vandalised:
"The Earth was created by God 10,000 years ago and its largest natural satellite, the Moon, was orbiting it shortly thereafter, around 10,000 years ago."
Which just goes to show that you can't rely on it as a authoritative source of information. Some people believe in a god who you could only describe as a trickster (or perhaps a joker), knocking together a planet just a few thousand years ago but making it look billions of years old; how we laughed.
You can get an idea of the relative sizes of the Earth and Moon quite easily: hold your arm out so the shoulder to the elbow is horizontal and the elbow to fingers is vertical. If you were as tall as the Earth is wide then the Moon would be as wide as from your elbow to the tip of your longest finger.
Now you just need to make your upper arm ten times longer and you'll have got the relative distance, although it would then be quite hard to pick up a cup of tea.