Electricity, Light, Heat and Sound

Electricity that flows in a closed path is called a

• path
• current
• circuit

The plastic around the wire is

• conductor
• insulator
• decoration

When the switch is closed, the light

• comes on
• stays off
• burns out

To complete a circuit the switch must be

• unattached
• open
• closed

____________ stops the flow of electricity.

• A conductor
• An insulator
• A magnet

If the lights are on, the circuit is

• closed
• open

If the lights are off, the circuit is

• closed
• open

The flow of electricity requires a

• complete path
• incomplete path
• insulated current

Which explains why the fork looks different under water?

• light can't pass through the glass
• the wavelength of light lengthens
• the amount of light increases when going through water
• light is refracted at an angle

Another name for light bending is ....

• Reflaction
• Absorbing
• Refraction
• mirror