Forms of Energy practice

If I rub two balloons against thick carpet, giving both balloons a negative charge, what will happen when I hold the balloons close together?

• The balloons push apart.

• The balloons stick together

• an electric current forms between the balloons

• a spark of light, similar to a lightning bolt, forms

Tags

NGSS.MS-PS2-3

A toaster uses electricity to toast bread. Which statement explains the way a toaster uses electricity to toast bread?

• Electrical energy is changed into light energy and motion energy.

• Heat flows through the electric current and changes into light in the wires.

• Electric current changes into motion energy that turns on the heating element.

• A toaster converts electrical energy to thermal energy.

When you plug a lamp in and turn it on, the light does not shine. Which of the following is a possible explanation for the light not coming on?

• The lamp is plugged into an open circuit.

• The lamp is plugged into a closed circuit.

• The lamp is plugged into a series circuit.

• The lamp is plugged into a parallel circuit.

Fireworks have what type of stored energy?

• sound

• wind

• kinetic

• chemical

Khyla and Skylar are studying the energy involved in playing a drum. What forms of energy do they observe?

Fill in the blanks. The drumstick has energy of _____. When it strikes the drum, the energy it produces is ______.

• motion; sound

• light; electricity

• sound; motion

• electricity; sound

Tags

NGSS.MS-PS4-1

Mrs. Mallon wears prescription glasses. How do her glass lenses make things look larger?

• by reflecting light

• by absorbing light

• by transferring light

• by refracting light

If Cooper is standing on a diving board, what type of energy does he have?

• chemical

• potential

• kinetic

• electrical

Tags

NGSS.MS-PS3-2

Why would a lineman who works on power lines need to wear rubber gloves?

• Rubber is an insulator and stops the flow of electricity.

• Rubber is warm and keeps the lineman's hands warm.

• Rubber is a conductor and will enable electric current to flow freely.

• Rubber is a resistor and only allows a little electric current to flow through.

Draw a closed, series circuit with a battery, 2 light bulbs and a switch. Label all parts of your circuit. (See your notes for help.)