3 Written questions
2 Multiple choice questions
- 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.
- a mass of stone or metal that has reached the earth from outer space; a fallen meteoroid.
2 True/False questions
extraterrestrial life → the region of space between the orbits of Mars and Jupiter in which most asteroids are located.
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.