Science one-word quiz

Write a one-word answer for each question.

1. The planet known as the Red Planet

2. The organ we use for seeing

3. The largest organ of the human body

4. Animals that eat both plants and animals are called

5. The layer of air around the Earth

6. The organ that pumps blood around the body

7. The green pigment in leaves

8. Frozen water is called

9. Water vapour changing back into liquid water

10. The planet closest to the Sun

11. The hard natural substance that is the hardest known

12. The largest planet in the solar system

13. The planet famous for its bright rings

14. The instrument used to measure temperature

15. Animals that eat only plants are called

16. The process by which green plants make their food

17. The planet we live on

18. Animals that eat only other animals are called

19. The force that pulls objects towards the Earth

20. The natural satellite of the Earth

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