Energy

1. chemical potential energy

1.1. stored in fuels,food and batteries

2. What?

2.1. energy is required to make things work or move . and it exist in many different forms

3. Why?

3.1. make things work or move

4. Potential energy

4.1. potential energy is energy that is stored in an object and can be used at a later time

5. Light energy

5.1. Travels in straight line

5.2. Can be reflected

5.3. Converts to electricity in solar panels

6. Example of light sources

6.1. Sun(Main source) movie projector,torch light

7. Electrical energy

7.1. affects almost every part of our lives

7.1.1. made available when electricity flows in an eletric circuit

8. sound energy

8.1. hear

8.2. can travel through solids,liquids and gases.It cannot travel through a vacuum.

8.3. enables us to communicate with one another.

9. heat energy

9.1. feel

9.2. warm

9.3. higher temperature to a lower temperature.

9.4. used to do work like:drying things,ironing,cooking

10. gravitational potential energy

10.1. stored in an object because of its location

10.1.1. higher the odject the greater its gravitational potential energy

11. elastic potential energy

11.1. stored in an elastic object as a result of stretched or compessed

11.1.1. when the string of a bow is pulled back, it gains elastic potential energy

12. Great White Sharks

12.1. tabby

12.2. kok wei

12.3. seng kiat

13. task

13.1. tabby-kinetic energy,potential energy

13.2. kok wei-heat energy,sound energy

13.3. seng kiat-light energy,electrical energy

14. Kinetic energy

14.1. motion

14.2. all moving objects have kinetic

14.3. a stationary object does not have kinetic energy

14.4. an odject gains kinetic energy when it starts to move and loses kinetic when it slows down or stop