Across
- 5. an instrument used by scientists to identify the materials that made up the comet from different light frequencies
- 7. is another term for an unusually bright meteor that have entered the Earth’s atmosphere at high velocities
- 9. is a material that is forced or thrown out, especially as a result of volcanic eruption, meteoritic impact, or stellar explosion
- 10. When meteoroids enter Earth's atmosphere at high speed and burn up, the fireballs or “shooting stars” are called ___
- 12. If a meteor survives its trip through the Earth’s atmosphere and lands on the Earth’s surface, it is called ___
Down
- 1. a small body orbiting around the sun, consisting of tiny, icy core and a tail of gas and dust
- 2. a little sphere
- 3. 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
- 4. The largest asteroid
- 6. Greek word for stars
- 8. is a rock composed of large angular broken fragments of minerals or rocks cemented together by a fine-grained matrix
- 11. are small, generally rocky bodies that orbit the sun and ranging in a diameter from a few meters to hundreds of kilometers