Science one-word quiz

Write a one-word answer for each question.

1. The gas we breathe in to stay alive

2. The organ we use for seeing

3. The instrument used to measure temperature

4. Animals that eat only other animals are called

5. The hard natural substance that is the hardest known

6. The instrument used to see very tiny things

7. The planet famous for its bright rings

8. Frozen water is called

9. The organ we use for hearing

10. The star at the centre of our solar system

11. The planet closest to the Sun

12. The layer of air around the Earth

13. The part of a plant that absorbs water from the soil

14. Animals that eat only plants are called

15. The green pigment in leaves

16. Animals that eat both plants and animals are called

17. The planet known as the Red Planet

18. The process by which green plants make their food

19. Water changing into vapour is called

20. The largest organ of the human body

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