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WorksheetsConversion of Energy, Wind and Hydropower Technologies
Total questions: 12
Worksheet time: 9mins
Identify the energy conversion you see in the image.
Mechanical energy being converted into electric energy
Electromagnetic energy converted into nuclear energy
Thermal energy converted into sound energy.
Nuclear energy converted into thermal energy.
Another name for Electromagnetic energy is _______________.
Thermal energy
Nuclear energy
Radiant energy
Sound energy
The energy conversion you're witnessing in the image is
nuclear energy converted to mechanical energy
thermal energy converted to nuclear energy
chemical energy converted to electromagnetic energy
mechanical energy converted to electric energy
In this image electromagnetic (radiant) energy is being converted into _______________________.
nuclear energy.
thermal energy.
light energy.
chemical energy.
Natural resources such as wind and water are considered ____________ ___________ because they are always available.
(a)
How does wind power electricity?
The wind pushes free electrons through the air then into wires.
Wind pushes the connected blades to push spinning parts then activate a generator to make electricity.
Water flows through the blades of the turbine and causes generator to make electricity.
Puppies play with the blades and stimulate the generator in body of the turbine.
Why is wind considered a source of renewable energy?
Wind is lighter than water or land (earth).
Water is nonrenewable energy.
Sound is not always produced to push turbine blades.
Wind is always blowing somewhere across the surface of the earth.
Why don't we use wind power more widely (everywhere and more often)?
The wind can become too powerful and damage the turbine.
The wind never stops moving the turbine, making it tired.
Wind doesn't always blow in the same spots.
Technology for storing large amounts of energy are currently very expensive.
Wind turbines can be placed far from cities that require the most energy because the wind blows better in open spaces.
Why is hydropower also called "hydroelectric power"?
Moving water can be poured into an electrical outlet.
It harnesses energy from flowing water and converts it into electricity.
Both of the above.
None of the above.
What machines are used to convert flowing water from a higher to lower elevation into electricity? (Check all that apply.)
Plastic sticks
Generators
Turbines
Car engine
About how much of all our electricity is generated from hydropower?
15%
10%
7%
50%
But how can we harness hydropower without hurting fish that live in rivers and dams? (Check all that apply.)
By using fish-friendly turbines.
By adding fish ladders that allow fish to swim around dams.
By leaving the rivers alone.
By moving the fish out of those areas completely.
