Module 2, Lesson 2 Review

A magnet formed when electric current flows through wire wrapped in coils around an iron is a(n)

• Resistor

• Electromagnet

• Battery

A switch in a circuit

• allows or stops the flow of electricity 
• creates electricity 
• acts as an insulator 

Energy can change from one form to another. Which can change mechanical energy into electrical energy?

• a switch
• power lines
• generator 

A flow of electrical charges is known as 

• electrical current
• voltage
• static electricity 

When a light bulb lights up in an electrical current, 

• light is transformed into electrical energy 
• electrical energy is transformed into light and heat
• light and heat are transformed into electrical energy 

Which is a device that produces electric current by spinning an electric coil between the poles of a magnet?

• switch
• engine
• generator

A path through which electric current can flow is called a(n)

• circuit
• switch
• electromagnet

Which of the following CANNOT be converted into electricity?

• motion caused by wind
• solar energy from the sun
• an open switch in a circuit
• stored energy in fossil fuels

What do a solar panel, a windmill, and a battery have in common?

• They all convert light energy into electricity.
• They all convert energy into electricity. 
• They all convert electricity into light.
• They all convert wind into electricity. 

Which best describes the flow of energy in the complete circuit?

• lightbulb, wire,battery, lightbulb

• battery, wire, lightbulb, wire, battery

• battery, lightbulb, battery, lightbulb

• wire, battery, wire, battery