Comets and Asteroids

3. A meteoroid that passes through the atmosphere and hits Earth's surface without burning up completely.
5. This cloud is a spherical region that surrounds the solar system, that extends from the Kuiper Belt and contains billions of comets
6. The layer of Earth's atmosphere where meteoroids burn up.
11. This is a large, rocky body found in space. It often orbits the sun in a belt between Mars and Jupiter.
14. A small rocky body that revolves around the sun
15. Planets that are small, dense, and rocky: Mercury, Venus, Earth and Mars
16. The solid center of a comet.

1. A bright streak of light caused when a meteoroid enters the Earth\'s atmosphere and burns up.
2. Instrument used to comets, asteroids, and meteors differences.
4. A ball of frozen gases,dust and rock that orbits the sun and has a bluish tail that glows.
7. This short-period comet visible from Earth every 74-79 years.
8. This belt is 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.
9. Considered an asteroid and a dwarf planet
10. Forms when solar radiation heats the ice so that it gives off gas and dust in this form.
12. Another name for a meteor. A ____________ star.
13. A fuzzy, bright cloud of gas that surround the comet's nucleus.