Electricity and Energy

Inside a light bulb is a wire. When electric energy travels through the wire, it transforms into heat energy and light energy. Which pair of sentences explains what happens if the wire breaks?

• The wire is part of the electric circuit. The electric current will not flow if it breaks.

• The wire is not part of the electric circuit. The electric current will continue to flow, but the bulb will not light.

• The wire is not part of the electric circuit. The electric current will flow, but the bulb is burned out.

• The wire is part of the electric circuit. The electric current will flow if the glass bulb is not broken.

Look at the diagram of a window alarm. When the window is closed, the switch on the electric circuit of the alarm is moved to the "off" position. When the window is opened, the switch on the electric circuit of the alarm is moved to the "on" position. Which pair of sentences describes how the system works?

• When the window is opened, it stops the flow of current in the electric circuit. Stopping the current flow changes the energy to sound energy.

• When the window is opened, it starts the flow of current in the electric circuit. Electric energy is changed into sound energy.

• When the window is closed, it stops the flow of current in the electric circuit. Mechanical energy is changed into sound energy.

• When the window is closed, it starts the flow of current in the electric circuit. Mechanical energy is changed into sound energy.

Tags

NGSS.MS-PS3-1

Which object is the best example of a resistor?

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Which diagram shows current flowing through an electric cicuit?

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What type of energy moves through a wire into a lamp?

• thermal energy

• radiant (light) energy

• electrical energy

• sound energy

This type of energy carries a current.

• Radiant energy

• Sound energy

• nuclear energy

• electrical energy

power lines are an example of this type of ENERGY

• sound

• mechanical

• electrical

• nuclear

Electrical energy is the movement of _____.

Tags

NGSS.MS-PS2-3

What is electrical energy?

• energy in the form of electricity

• energy you can see

• heat energy

• movement energy

Tags

NGSS.MS-PS2-3

What is electrical energy?

• energy that travels in waves

• the movement of electrons