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Asteroid: a large rocky body in space, in orbit around the Sun. Meteoroid: much smaller rocks or particles in orbit around the Sun. Meteor: If a meteoroid enters the Earthâs atmosphere and vaporizes, it becomes a meteor, which is often called a shooting star.Meteorite: If a small asteroid or large meteoroid survives its fiery passage through the Earthâs atmosphere and lands on Earthâs surface, it is then called a meteorite.Another related term is bolide, which is a very bright meteor that often explodes in the atmosphere. This can also be called a fireball.ummary. In short, the difference between asteroids and meteors all comes down to a question of location. Asteroids are always found in space. Once it enters an atmosphere, it becomes a meteor, and then a meteorite after it hits the ground.
Meteorites do not contain any substantial amount of quartz, whereas quartz is common in many terrestrial rocks. Quartz is harder than any of the common minerals in meteorites. Quartz is so hard that it will easily make a deep scratch in glass.Even if you press hard, a meteorite will at best only make a weak scratch mark. (Use a sharp edge of the rock.). In the photo above, the top scratch was made with a quartz crystal.ottom Line: If you have a rock that bites into glass and makes a scratch mark like the two at the top of the photo above, then it contains quartz and it is not a meteorite. If your rock does not make a scratch, then the rock is still probably not a meteorite because many terrestrial rocks do not contain quartz.