Atmosphere - The blanket of gases surrounding the Earth or another planet., Comet - Made of dust and ice and are called "dirty snowballs." When it nears the Sun and heats up, it leaves a tail of ice and gas., Asteroid - Large, rocky objects that orbits around the Sun. They orbit between Mars and Jupiter., Meteoroid - Small, rocky or metallic objects that travel in space. Broken off piece from an asteroid or comet. They are smaller than asteroids., Meteor - A space rock that burns up in Earth's atmosphere, also called a "shooting star.", Meteorite - A meteor that survives its passage through the Earth's atmosphere and hits the ground., Oort Cloud - A region of comets that surrounds the solar system, where LONG PERIOD comets come from., Kuiper Belt - A region of the solar system beyond the orbit of Neptune, believed to contain many comets, asteroids, and other small bodies made largely of ice. This is where SHORT PERIOD comets come from., Asteroid Belt - A region of the Solar System between Mars and Jupiter where large rocky objects orbit and where you can find the largest asteroid, Ceres (also called a Dwarf Planet), Friction - Meteors burn up in a planet's atmosphere due to their high speed and _________ between the space rock and the gas particles. , Crater - Bowl shaped hole made by the impact of a meteorite. , Metal - Space rocks are made of rock or __________, such as iron and nickel. , Coma - Comets have two parts: a tail and a __________, where ice turns to a gas as it approaches the Sun. ,

Space Rocks

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