Puzzle 81
Across
- 4. The planet with the most gravity.
- 6. An element Joseph Priestley discovered.
- 7. An inorganic molecule produced by lightning.
- 11. The study of the weather.
- 15. The bending of a sound or light wave.
- 18. A name first used by William Shakespeare.
- 19. The tallest type of grass.
- 20. The study of light and vision.
Down
- 1. The best selling novel of all time.
- 2. The quality that allows an object to float on water.
- 3. The largest internal organ in the human body.
- 5. Malfunction of this organ results in diabetes.
- 8. The number of bones in a Shark's body.
- 9. The medical term for bad breath.
- 10. The subatomic particle with no charge.
- 12. The first-ever living creature to be cloned.
- 13. A famous ship that sunk in 1912.
- 14. The language the name “Australia” is derived from.
- 16. The first cash crop in America.
- 17. The term for the policy of racial segregation in South Africa.