NGSS.HS-PS3-3

What device changes electrical energy to mechanical energy?

• electromagnet
• electric motor
• conductor
• generator 

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NGSS.HS-PS3-3

The house illustrated here uses panels on the roof to collect a natural resource and convert it into electricity that can be used.
Which alternative energy source does this house use?

• Water
• Wind
• Solar
• Geothermal

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NGSS.HS-PS3-3

Photovoltaic cells convert sunlight into ________ energy.

• Heat

• Kinetic

• Light

• Electrical

• Potential

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NGSS.HS-PS3-3

Put the items below in correct sequence for the generation of electricity using the wind
1 – generator converts mechanical energy into electrical energy
2 – wind turns the wind turbine blade
3 – the gear box transfers mechanical energy to the generator
4 – electricity is transferred to the grid

• 1-2-3-4
• 2-1-3-4
• 2-3-1-4
• 2-4-3-1

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NGSS.HS-PS3-3

If you have a battery in a device, what is the first energy transformation that must happen?

• Chemical to light

• Chemical to electrical

• Electrical to chemical

• Electrical to light

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NGSS.HS-PS3-3

What type of energy is the electrical energy from the battery being converted into in this radio?

• Heat and light

• Sound and light

• Sound and heat

• Potential energy

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NGSS.HS-PS3-3

In most power plants what is the heat energy used for?

• to create steam which turns turbines

• to directly power the generator

• the heat is transmitted through the electrical grid into homes

• nuclear fission which then creates a chain reaction

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NGSS.HS-PS3-3

What is the function of the generator?

• Convert electrical energy to mechanical (kinetic) energy

• Convert electrical energy to thermal energy (heat)

• Convert mechanical (kinetic) energy to electrical energy

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NGSS.HS-PS3-3

What is the function of the transformer?

• Convert electrical energy to mechanical (kinetic) energy

• Convert electrical energy to thermal energy (heat)

• Convert mechanical (kinetic) energy to electrical energy

• Step up or step down the voltage

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NGSS.HS-PS3-3

Photovoltaic cells convert sunlight into:

• Heat
• Motion
• Light
• Electricty

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NGSS.HS-PS3-3