what is difference between meteors and meteorites?
A meteor is a piece of iron or rock that is falling through the earth's atmosphere from space. It is called a meteorite when it lands on the earth's surface. A meteor is much bigger in size than a meteorite as much of the meteor burns off in the earth's atmosphere, creating the visible "shooting star" in the sky. Meteorites are different sizes and shapes. The largest meteorite ever discovered was in 1920 in South Africa. It weighed about 50 tons. A meteor is produced when a meteoroid (a solid object between the size of a grain of sand and 10 metres wide), enters the earth's atmosphere at an altitude of 75km - 100km.