Science one-word quiz

Write a one-word answer for each question.

1. The green pigment in leaves

2. The instrument used to measure atmospheric pressure

3. The rate of change of velocity

4. The planet we live on

5. The bending of light as it passes from one medium to another

6. The SI unit of force

7. A reddish-brown metal used in electric wires

8. The chemical symbol for gold

9. Animals with a backbone are called

10. The transfer of pollen from anther to stigma

11. The bouncing back of light from a surface

12. The chemical formula H2O stands for

13. Blood vessels that carry blood away from the heart

14. The positively charged particles in the nucleus of an atom

15. The planet closest to the Sun

16. Water vapour changing back into liquid water

17. The process by which green plants make their food

18. The process by which a seed starts to grow into a plant

19. The organ that pumps blood around the body

20. Animals that eat only other animals are called

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