Unit 6:Light and sound

Enegy
1. It is the ability to do work
2. Most of the enrgy comes from the sun
3. Forms energy:Light,Sound and Electricity
4. We transform enrgy from one to another
Different types of enrgy
1. Solar enrgy
  1. It comes from the sun
  2. Solar panels transform solar enrgy into heat and electricity
2. Wind enrgy
  1. It comes from the wind
  2. Windmills transform wind enrgy into electricity
3. Hydropower energy
  1. It comes from the moving water
  2. We transform the enrgy of moving water into electricity
4. Thermal enrgy
  1. heat enrgy
  2. It is inside every substance
5. Geothermal energy
  1. It comes from the Earth`core
  2. We transform geothermal energy into electricity
6. Biomass
  1. It is organic material made from living organisms.Example=rubbish,wood,crops
    1. We transform biomass into heat and other products(gases and fuels
7. Mechanical energy
  1. It`s produced by objects in motion
  2. Example=Wind enrgy
8. Chemical energy
  1. It comes from chemical reactions
  2. Petroleum and natural gas produca chamical energy
9. Electrical energy
  1. It comes from electrons
Renewable energy sources
1. You can use again and again
2. They are no going to disappear
3. Thet are good for the enviroment
4. Sun,Wind,Hyfropower...
Non-renewlable energy sources
1. You can use them once
2. They can disappear
3. They are bad for the enviroment
4. Natural gas,oil,coal...
5. Nuclear energy
  1. Atom=Form every object
  2. We use nuclear energy to produce electricity
6. Coal
  1. Combustible rock
  2. Plants
  3. Cola-mines=We use coal to produce heat and electricity
7. Oil
  1. Of animal and plants
  2. Oil=petroleum-petrol
  3. We use oil to produce electricity and petrol
8. Natural gas
  1. Ch4
  2. Of animals and plants
  3. We uise oil to produce electricity and petrol

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Unit 6:Light and sound

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