Across
- 2. The waves that moves in straight lines through space.
- 3. Can make things move, change shape or change their speed.
- 7. When light strikes blank materials, only some of the light passes through them
- 8. Light travels as this.
- 11. A surface with a bump
- 15. The material, or matter, of which something is made
- 17. The basic unit of a chemical element.
- 18. Travels in narrow beams called rays.
- 19. Transferred in waves through the frequency of particles.
- 20. Change A change affecting the form of a chemical substance.
- 21. Blank occurs when light traveling through one material bounces off a different material.
- 22. Something basic and important.
- 23. The action or process of moving or being moved.
Down
- 1. Atoms are single neutral particles. Molecules are neutral particles made of two or more atoms bonded together.
- 4. An object that can pull certain types of metal to itself
- 5. The higher the blank, the more energy
- 6. A group of atoms bonded together.
- 9. The waves that travels through air and allow us to hear sound.
- 10. Change When a substance combines with another to form a new substance.
- 12. Is made of two or more atoms of different elements.
- 13. If the vibrational energy of a light wave is passed through the object, then the object appears clear, or blank.
- 14. The number of protons in the nucleus of an atom.
- 16. The waves that move on top of water.