Wind, Solar & Tidal Energy: Advantages And Disadvantages Flashcards
Where does solar energy come from?
It comes from the sun In the form of radiation
What are three ways solar energy works? (what are the three ways to collect solar energy)
- passive heating system
- solar collectors
- photovoltaic cells
How do photovoltaic cells work?
Sun hits photovoltaic cells, causing electrons to move. This movement creates electricity
How do solar collectors work?
The large glass panels captures heat (from the sun) then transfers it to copper pipes with water that goes through different heating units
How do passive heating systems work?
They involve positioning houses so they are exposed to light and heat. Walls absorb the heat and stores it.
What are the advantages of solar energy?
- it’s renewable
- it does NOT emit greenhouse gases
What are the disadvantages of solar energy?
- it’s expensive
- depends on the sun’s position
Where does wind energy come from?
the motion of wind
How does wind energy work?
The wind (wind energy) turns turbines (mechanical energy) then a generator converts it into electrical energy
What are the advantages of wind energy
- it’s renewable
- it does NOT emit greenhouse gases
What are the disadvantages to wind energy?
- its noisy/ loud
- can’t be stored
- it’s unprintable
- ruins the beauty of a landscape
Where does tidal energy come from?
comes from tides. Which is caused when the moons gravity pulls the water on earth. Therefore creating high and low tides.
How do tidal power plants work?
A gate is open, allowing the tides/water to flow back and forth through a turbine. The turbine converts it into mechanical energy. Then the generator transforms it into electrical energy.
What are the advantages of tidal energy?
- it’s Renewable
- it does NOT emit greenhouse gases
- it can be predicted
What are the disadvantages of tidal energy?
- building plants are complicated
- it’s expensive
- only a few places have a high tidal range
