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.
- In popular cultures, "extraterrestrials" are life forms — especially intelligent life forms— that are of extraterrestrial...
2 True/False questions
asteroid → 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.
asteroid belt → the region of space between the orbits of Mars and Jupiter in which most asteroids are located.