Energy 2 Review

A light bulb transfers electrical energy into light and what other type of energy?

• Heat
• Mechanical
• Sound

Energy that moves through an electric circuit is carried by moving _______.

• atoms
• light
• charges
• sound

As the electrons flow through the wire, _______ is generated around the wire.

• a convection current
• a magnetic field
• elastic potential energy
• gravitational potential energy

Which of these does one need to have to create the electromagnet?

• battery
• wood
• aluminum foil
• light bulb

What allows the electricity to flow from the battery to the device and then back to the battery

• open circuit
• closed circuit
• parallel circuit
• none of the above

An electrical motor changes electrical energy to _______ energy.

• light energy
• mechanical energy
• chemical energy
• nuclear energy

Which of the following appliances would change electrical energy into mechanical energy?

• a light bulb
• an oven
• a stereo speaker
• a blender

What could you do to increase the number of paper clips their electromagnet picks up?

• make the wire longer
• remove the nail from the center of the wire
• increase the number of loops around the nail so they do not touch
• spread the loops of wire apart so they do not touch

Which correctly lists the energy conversions when turning on a tv?

• sound and heat
• sound and light
• light, sound, and heat
• light, sound, and electricity

Once a circuit is connected, which item, when put next to the wire, moves?

• a compass needle
• a petri dish full of water
• small piece of aluminum foil
• a battery placed in the opposite direction