Solar System

4. Planets closest to the Sun; Rocky planets
7. The circular path of an object as it revolves around another object
9. Any object that revolves around a larger object
10. Elongated circle, stretched into an oval.
11. Distance between the Earth and the Sun
12. A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
14. Sun and the Eight Planets along w/numerous moons, asteroids comets and other objects that orbit it
15. A measure of how many particles are packed together into a certain amount of space
16. All existing matter and space considered as a whole; the cosmos.
17. Matter continues to stay at rest or uniform motion in a straight line, unless acted on by an external force.

1. Massive cloud of gas and dust
2. Matter is neither created nor destroyed, it only changes form
3. A body of ice and dust that travels in a long narrow orbit around the sun
5. The region of space between the orbits of Mars and Jupiter in which most asteroids are located.
6. A force of attraction that occurs between masses and draws objects toward each other
7. further away from the Sun; Gas Giants
8. The revolving of one object around another in an oval-shaped path
13. A small object made of rock or metal that orbits the sun