Science one-word quiz

Write a one-word answer for each question.

1. Animals that eat only other animals are called

2. The planet known as the Red Planet

3. The hard natural substance that is the hardest known

4. Animals that eat only plants are called

5. The largest planet in the solar system

6. The organ that pumps blood around the body

7. The green pigment in leaves

8. Frozen water is called

9. The planet famous for its bright rings

10. The largest organ of the human body

11. The instrument used to see very tiny things

12. The process by which green plants make their food

13. The star at the centre of our solar system

14. The planet closest to the Sun

15. The layer of air around the Earth

16. The organ we use for hearing

17. The organ we use for seeing

18. Water changing into vapour is called

19. The natural satellite of the Earth

20. The planet we live on

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