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Subject connection

8What do you know about alternative energies? What kind of energies have you studied in Science classes? Discuss.

品Read the text and answer.

a. What is alternative energy?

b. Which alternative energies are the most affordable? c. Which one is the most reliable?

What is ALTERNATIVE ENERGY?

Fossil fuels like oil, coal, and natural gas are the most traditional sources of power generation. Therefore, the energy that is produced from any source other than fossil fuels is called Alternative Energy.The most affordable alternative energies are wind and solar power.Bioenergy, geothermal energy, hydroelectric power, and nuclear energy are also becoming affordable too, but more slowly.One of the most reliable sources of energy is nuclear energy. Next in line comes geothermal, followed by natural gas. Natural gas is considered the cleanest burning and most reliable fossil fuel.Wind energy, which uses turbines to get power from the wind, is one of the cleanest and most sustainable forms of electricity generation.As alternative energy technologies continue to improve, they become cheaper and have the potential to meet the world's energy demand.

Taken and adapted from: Why Alternative Energy Sources Are the Future? (n.d.). Just energy. Retrieved from: https:/bit.ly/347Gr46

MINIPROJECT Alternative energy sources

In pairs, you will make a PPT presentation of a type of alternative energy.

a.2Choose an alternative energy source, and look for information about it. Include what it is, how it works, advantages and disadvantages, and name a plant in Chile where that alternative source of energy is used.

b. After organizing your ideas and selecting the information you will include, start working on your PPT or presentation.

c. Present your work to the class.

SCIENCE

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UNIT 3· Technology & Innovation · SUBJECT CONNECTION