SCIENCE SUMMARY 2nd semester FOR GRADE 1

SCIENCE SUMMARY 2^nd semester  FOR GRADE 1

1.      Heat is useful, we need heat for many things

2.      Heat from the sun can dry our clothes

3.      Heat from fireplace keeps us warm

4.      We use heat to cook our food

5.      The sun gives out heat

6.      Things that give out heat when we use them are :

-         Lighted candle

-         Oven

-         Lamp

-         Iron

-         Kettle, etc

7.      Some sounds are nice to hear

These sounds can be soft, for example music box

These sounds can be loud, for example trumpet sound

8.      Some sounds are not nice to hear. For example : drilling and thunder

9.      We use sounds to :

-         Tell people what to do

-         Helps us to relax

-         Warn us of danger

10. We can move things by

-  Pushing

-  Pulling

11. A push moves things away from you

12. A pull moves things nearer to you

13. It is easy to move things that are light

14. It is difficult to move things that are heavy

15. Electricity is energy

16. A radio, a computer, an iron, and a hairdryer need electricity to work

17. Alarm clock, torch, camera, car toy get electricity from batteries

18. Three example ways to save electricity are :

-Switch off the fan when they are not use

-Switch off the light, when you go out

-Switch off the radio when they are not use

19. Do not put to many plugs into the same socket

20. Do not put anything other than a plug into a socket

21. Do not touch a socket with wet hands

22.  Be careful not to trip over wires

23. We must not waste electricity. We should turn off the electricity things.When we are not using them

24. In the night is dark because there is no sun that can give us bright light

25. Wind is the moving air