Share Lesson 2.3 - A Shining Example of Clean Energy
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What are a greenhouse gases?
They are gases that contribute to the heating of the Earth's surface.
Define: efficient
Done without wasted effort or expense
Define: heat
Energy moving from one area to another.
What is a turbine?
A rotating engine that works when a gas or liquid flows through it.
What are photons?
They are tiny packets of electromagnetic radiation or energy
Where is the world's largest solar power plant located?
It is located in the Mojave Desert.
How many mirrors are located in the Mojave Desert?
More than 900,000.
Why isn't solar used very often?
It isn't used very often because it is not affordable, doesn't work at night, etc...
How is most of the electricity we use today created?
It is created by burning coal.
What does the burning of coal create?
It creates greenhouse gases.
Name some clean alternative energy sources?
Wind power, solar power, geothermal power, etc
What is the most abundant power source on Earth?
Solar energy
Is it a challenge to capture solar energy? Why?
Yes, it is. It depends on the weather, and the area of the world you live in.
How does energy from the sun travel to Earth?
It travels to Earth in the form of radiation.
What is solar energy?
It is light and heat emitted by the sun.
Explain the difference between using solar cells to create electricity and using mirrors or lenses to create electricity.
Solar cells use photons in light to produce electricity. Mirrors and lenses create heat that can be used to make steam for turbines that produce electricity.
