Across
- 4. light bends as it passes from one medium to another
- 6. molecules that are results of reactants; at the end or right of equation
- 7. distance between crests or troughs
- 9. contains one type of atom; cannot be broken down
- 10. a push or pull
- 12. repeating disturbance that carries energy from one point to another
- 13. round or flattened discs; no arms
- 16. amount of energy that's given off from a star's surface
- 17. light bounces off the surface of a medium
- 18. 2 or more different elements chemically combined
Down
- 1. does not have regular galaxy shape
- 2. type of wave that is perpendicular at a right angle
- 3. Law of ____ of mass: matter cannot be created nor destroyed
- 5. change in speed; rate at which velocity changes
- 8. the height of a wave
- 11. galaxies that has arms that are outward
- 14. a type of light on the electromagnetic spectrum that your eyes can see
- 15. substance that react together to make a product; left side of equation