1. Universe The whole of space and every thing in it , including the planets and stars .

2. Satellite An object that moves round a bigger object in space

3. space The area beyond the earth round the planets and stars

4. knowledge What you know and understand about sth

5. Explore Travel round a place in order to learn about it

6. Scientist a person who studies the physical world

7. analysis A careful study of sth in order to explain.

8. Flow Move smoothly

9. float On the surface of the water.

10. Burst Break open suddenly and violently

11. ocean A very big sea e.g the atlantic ocean

12. tide The regular change in the sea level caused by the moon and sun

13. drown Die in water because you cant breath

14. Drizzle Rain lightly with very small drops

15. rainbow

16. chilly A little too cold to be comfortable

17. mild Warmer than usual for the time of year

18. disease Illness in people , animals ,or plants.

19. Pour Rain heavily.

20. Human Connected with people.

21. gale Strong wind.

22. Breeze A light wind.

23. Bitterly cold Extremely cold.

24. spread A ffect more and more people or things .

25. rise Increase , go higher .

26. violent very strong and usually causing damage .

27. sudden Happening very quickly .

28. damage Harm or injury caused when sth is broken.

29. lava Hot liquid rock.

30. supply An amount of sth that you need.

31. Rescue sb Take sb from a dangerous place to safety .

32. drought A long period with no rain.

33. maintain Make sth continue at a certain level.

34. fear A feeling that sth bad might happen.

35. earthquake A sudden violent movement of the ground causing damage.

36. Tidal wave A very large ocean wave that is caused by storm or earthquake , and which things when it reaches land.

37. starve Suffer or die because you don’t have enough food .

38. Crops Plants that are grown for food .

39. collapse If a building collapse , if falls to the ground .

40. ground The top part of the earth’s surface that people walk on.