Across
- 5. The process by which plants make food. (8)
- 7. The chemical symbol for water. (2)
- 9. The number of continents on Earth. (7)
- 11. The force that pulls objects towards the center of the Earth. (6)
- 12. The smallest planet in our solar system.
- 13. The capital city of France
- 15. The chemical symbol for gold
- 16. The longest river in the world.
- 17. The world's tallest mountain. (6)
Down
- 1. The first man to walk on the moon.
- 2. The capital city of Australia. (8)
- 3. The study of stars and planets
- 4. The largest planet in our solar system.
- 6. The author of "Romeo and Juliet".
- 8. The largest mammal
- 10. The largest ocean on Earth. (7)
- 14. The main organ for breathing in humans. (5)