Wind Energy

Zespół Szkół Ogólnokształcących nr7

in Katowice

Wind energy

What is wind energy?Humans have used wind energy to power machinery in windmils for hundreds of years. Today, electricty companies are building wind turbines to make electricity for homes, schools and factories.

Advantages of wind energy

• It is a renewable from of energy, which means it will never run out.

• Wind energy is clean. It causes no pollution.

• The land on which turbines are built can still be used for farming.

• It costs no more than coal energy and is cheaper than nuclear energy.

Possible disadvantages

• Some people are concerned about noise, although wind turbines are quieter than many people think.

• Wind turbines do not work in very weak or very strong winds.

• Some people think that wind farms spoil the look of the landscape, although others disagree this is a matter of opinion.

Experiment with wind energy.

1. Join rotor blades with dynamo.

2. Connect bulb with dynamo.

3. Use vaccum cleaner to blow on your rotor blades.

4. Observe bulb.

Conclusions:

• Bulb lights on.

• Wind has got kinetic energy. There is a possibility to transform the kinetic energy into the electricity.

The device that makes wind energy transforms into electricity is:

a) Wind turbine

b) Microwave

c) PV cells

Check your answer.

a) True, wind turbine transforms the wind power into the electricity

b) False, microwave is used to heat meals

c) False, PV cells are used to get the energy from the sun.

Does wind turbine produce CO2

a) Yes

b) No

c) Only if the wind is strong

Check your answer.

a) False, wind turbines are absolutely environmentaslly friendly.

b) True, wind turbines do not produce CO2

c) False, strong current stops the production of electricity.

Since when the wind energy has been used to electricity production:

a) One does not use the wind energy because it does not exist.

b) The wind energy has been used for many years.

c) The wind energy has been used since the ancient times.

Check your answer.

a) False, the experiment shows that the wind energy undoubtfully exists.

b) True, the Netherlands are famous for its landscape full of various wind turbines.

c) False, there was no electricity in the ancient times.

Thank you for your attention.

Created by:

Marcin Kurka and Tomasz Świątkowski.

(Rodimus) (Vierra)