Across
- 1. The study of matter and energy
- 6. A type of material that all light can pass through
- 9. The study of living things
- 11. When referring to gold it is near the surface
- 13. The testing of a scientific hypothesis
- 14. A scientific prediction
- 15. The study of space
Down
- 2. The study of chemicals and how they combine
- 3. A systematic search for certain information
- 4. A type of material light can't pass through
- 5. When an item rotates around a planet or star
- 7. When light bends
- 8. A type of material some light can pass through
- 10. The gas we breathe in
- 12. A shape that refracts light when it travels through it