Across
- 3. we used this source of light
- 5. when light goes into a material and stops
- 7. the source of all light and energy
- 8. a good surface to show your shadow puppets
- 11. this is made when the particles are tightly packed together
- 12. used for measuring temperature
- 13. a good material to use to make shadow puppets
- 15. when light bends when it passes from one medium to another
- 18. particles in this matter float randomly
- 19. a type of purple colour
- 20. the number of different states of matter
Down
- 1. when light bounces off a surface
- 2. these are made when the path of light is blocked
- 4. a word to describe water, milk, juice, wine and oil
- 6. when ice melts it becomes this
- 9. this verb means to get smaller
- 10. a good conductor of electricity
- 14. this colour absorbs light
- 16. the opposite to contract
- 17. the second colour in the rainbow