3 Written questions
2 Multiple choice questions
- a mass of stone or metal that has reached the earth from outer space; a fallen meteoroid.
- any of the small bodies, often remnants of comets, traveling through space: when such a body enters the earth's atmosphere it is heated to luminosity and becomes a meteor.
2 True/False questions
Comet → a celestial body moving about the sun, usually in a highly eccentric orbit, consisting of a central mass surrounded by an envelope of dust and gas that may form a tail that streams away from the sun.
asteroid → Also called minor planet. Astronomy . any of the thousands of small bodies of from 480 miles (775 km) to less than one mile (1.6 km) in diameter that revolve about the sun in orbits lying mostly between those of Mars and Jupiter.