Across
- 3. , A word meaning to make something clear.
- 5. , A common fruit that keeps doctors away when eaten regularly.
- 6. ,The gas that plants need to perform photosynthesis.
- 7. , The type of tree that produces acorns.
- 9. , The closest planet to the Sun.
- 10. , A large body of water that covers about 70% of the Earth’s surface.
- 16. The capital of the United Kingdom.
- 18. , A shape with three sides.
- 19. , A country in Asia known for its Great Wall.
- 20. , The term for an area of land surrounded by water on three sides.
Down
- 1. , A shape with four equal sides.
- 2. , The term for a large mass of ice moving slowly.
- 4. The process by which plants make food using sunlight.
- 8. , A material used in construction, often found in buildings.
- 11. , A famous scientist known for his theory of gravity.
- 12. ,The outer layer of the Earth.
- 13. , The Earth’s natural satellite.
- 14. , A machine that allows us to see objects far away.
- 15. , The type of animal that has a backbone.
- 17. A group of people living in the same place and having the same culture.