Across
- 2. attracts all objects toward each other
- 4. a ball of hot gas, primarily hydrogen and helium then undergoes nuclear fusion
- 7. a loose collection of ice and dust that orbits the sun, typically in along narrow orbit.
- 8. the amount of matter in an object
- 9. an object that orbits a planet
- 12. one day
- 13. the different shapes of the moon you see from the earth
- 14. when neither hemisphere is tilted toward or away from the sun
- 15. A streak of light the sky produced by the burning of a meteoroid in earths atmosphere
Down
- 1. the measure of the force of gravity on an object
- 3. one year
- 5. an imaginary line that passes through a planets center
- 6. a system of organizing time
- 10. when the sun reaches its greatest distance north or south of the equator
- 11. an object the orbits a star