Across
- 4. A large object that orbits a star.
- 6. The path of an object in space around another object. Earth revolves around the sun in a counterclockwise orbit.
- 7. Includes the Sun, 8 planets, large rocks called asteroids, small rocks called meteoroids, and comets.
- 9. A natural object that orbits a planet and has no atmosphere, therefore, there is not wind, rain, erosion, or weathering.
Down
- 1. The force of attraction between objects that pulls one towards another.
- 2. To go around, or orbit, another object.
- 3. To spin around on an axis.
- 5. An imaginary line that goes through Earth from pole to pole around which the planet rotates. The Earth spins around its axis every 24 hours.
- 8. A medium size star, made of hot gases that produces its own light.