SC9 Electricity Quiz I

The picture showing the energy conversion

Electrical → light

is:

• 
• 
• 
• 

What is the energy conversion when you plug in a stereo and listen to music?

• electrical to mechanical

• chemical to heat

• electrical to light

• mechanical to sound

What is the energy conversion when you plug in a fan?

• light to mechanical (motion)

• electrical to heat

• mechanical (motion) to light

• electrical to mechanical (motion)

A device that converts Electrical Energy and into Thermal Energy.

• A Battery
• A Hair Dryer
• A Bicycle
• Your Stomach

Energy of motion is also called ______________ energy.

• Kinetic

• Chemical

• Thermal

• Electrical

In science class, you learned that approximately 20 % of the world’s electricity is produced by hydro-electric generators. In order to be viable, these generators must be placed across rivers with large volumes of water passing through them. How does a hydro-electric generator produce electricity?

• A hydro-electric generator produces electricity via chemical reactions involving water.

• A hydro-electric generator produces electricity via chemical reactions involving water.

• A hydro-electric generator converts the energy of flowing water into electricity.

• A hydro-electric generator converts the energy of heated water into electricity

The pathway through which electricity flows.

• conductor

• circuit

• conversion

• heat transfer

A material that allow heat or an electric current to flow through easily. Example is metal.

• conductor

• circuit

• conversion

• heat transfer

What is the unit of measure for current?

• ampere

• current

• voltage

• ohms

What moves when we say that there is current?

• inductors

• conductors

• electrons

• atoms