Science primary 6; Energy
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  • 1. ENERGY Living things and non-living things need energy
  • 2. Energy to Living things need energy to carry out life processes grow move reproduce make food
  • 3. Non-living things need energy to do work
  • 4. Energy stored in most of energy resources Source of energy
  • 5. Forms of energy Kinetic energy Potential energy Light energy Heat energy Sound energy Electrical energy
  • 6. Kinetic energy is the form of energy a moving object possesses The faster an object move, the greater its kinetic energy
  • 7. An object has potential energy when it stores energy Potential energy Chemical potential energy Gravitational potential energy Food, fuels, dry cells Object position - Object mass - Height from the ground stored in because of depend on
  • 8. Light is a form of energy that allows us to see We can see object if it reflects light or if it source of light which then enters our eyes.
  • 9. Plants use light energy to make food
  • 10. Heat is form of energy that flows from a region of higher temperature to lower temperature Temperature is a measure of hotness or coldness an object Heat - the Sun - volcano - geyser - electrical appliances - burning fuels - to cook food - to boil water - to catch fire - to change states of matter source uses for
  • 11. Sounds is a form of energy that can be detected by our ears sound communicationcan use can produced - human activities - musical instruments - speaker of music system
  • 12. Why our ears can detect sound energy? Sound can travel through Air Solids Liquids
  • 13. Electrical energy is energy stored in electric field Electric field Power station
  • 14. How power station produced electricity?
  • 15. Dry cells
  • 16. Solar panel
  • 17. Conversion of Energy Energy is used by transform its energy Chemical potential energy Electrical energy Light energy Heat energy
  • 18. Energy can’t be created or destroyed, but Energy can be converted from one to another