1. Energy
Around Us
Paula Crespo González

2. Forms of energy
 Energy is the ability an object or body has to
create changes arond it .
There are different types of energy :
* Mechanical or kinectic energy .
* Light energy.
* Sound energy.
* Electric energy .
* Thermal or heat energy.
* Chemical energy.
* Nuclear energy.

3. Electricity
 Electricity comes from other forms of energy
that exist in nature like the kinectic energy of
moving water or wind ,or the chemical energy
of coal.
Electricity is very useful form of energy:
* We can transport it easily .
* It transforms into other types of
energy .

4. Sources of energy
 Sources of energy give us the energy we need .
There are two
*Sources of renewable energy .These are the
ones that are abundant like sunlight or
the wind.
*Sources of non-renewable energy .There is
only a limited amount of this type of
energy ,like petroleum.

5. Sources of
renewable
energy
Sunlight is a reneweble source of energy

6. Sources of non-
renewable energy
Petrol is the most used non-renewable energy source

7. The most widely
used sources of
energy
 The most common sources of energy are:
* Fuels. The most frequently used fuels are:
- Coal.
- Natural gas.
- Petroleum.
* Water.
* Wind .
* Uranium and plutonium.

8. Other sources of
energy
 There are other sources of energy that we use
less:
* The sun.
* Biomass.
* Rocks and water in volcanic areas.
* Waves and tides.

9. Other
sources of
energy
Solar panels catch solar energy and trnsform it

10. Producing
elctricity
 These power station are different ,depending
on the source of energy they use:
* Hydroelectric power station .
* Thermal power station .
* Nuclear power station .
* Solar power station .
* Wind farms.

11. Producing electricity
Wind turbines generate electricity when they
move

12. Thermal power
plant

13. Thermal power
plant

14. Hydroelectric power
stations

15. Energy problems
 Producing and using them causes many problems to
living things and the enviroment :
* Changes in the landscape.
* negative effects on living things .
* Polluntion.
* Depletion of non- renewable energy sources.

16. Energy problems
Acid rain harms the forests

17. Energy problems
Power lines can be harmful to living things and the
enviroment

18. Using energy
efficiently
 We can do many things to save energy:
* Turn off the lights.
* Use public transport.
* Turn off heaters and air conditioning.
* Avoid opening the door of the fridge.

19. Fin