Science one-word quiz

Write a one-word answer for each question.

1. The pigment in red blood cells that carries oxygen

2. Water vapour changing back into liquid water

3. The hard natural substance that is the hardest known

4. The bouncing back of light from a surface

5. The powerhouse of the cell

6. A reddish-brown metal used in electric wires

7. The instrument used to measure atmospheric pressure

8. The star at the centre of our solar system

9. Animals that eat only plants are called

10. The organ we use for hearing

11. The planet famous for its bright rings

12. The natural satellite of the Earth

13. The instrument used to see very tiny things

14. The transfer of pollen from anther to stigma

15. Animals that eat both plants and animals are called

16. The smallest unit of life

17. The layer of air around the Earth

18. The study of living things

19. The force that pulls objects towards the Earth

20. The gas we breathe in to stay alive

Gurukul Technicals Institute: free practice sheetsSheet 1355646