Across
- 2. The Earth is considered to be the center of the solar system
- 7. The temperature at which the substance changes from a solid to a liquid
- 8. The average distance between Earth and the Sun
- 11. The only star in our solar system
- 12. A substance that has no fixed size or shape
- 14. The Sun is considered to be the center of the solar system
- 16. A substance that flows freely but is of constant volume
Down
- 1. Force by which a planet or other body draws objects toward its center
- 3. A state of matter that retains its shape and density when not confined
- 4. Small, rocky objects that orbit the Sun
- 5. The circular motion of an object around its center
- 6. The force exerted by magnets when they attract or repel each other
- 7. A dimensionless quantity representing the amount of matter in a particle or object
- 9. All of space, and all the matter and energy that space contains
- 10. The distance light travels in one year
- 13. The degree of hotness or coldness of an object
- 15. Mass of a unit volume of a material substance