Electric Currents Stemscopedia

After viewing the image, which part of the plumbing system is analogous to the battery in an electric circuit?

• Water pump

• Pipe

• Valve

• Water tank

Think about how electrical energy travels. What might be a reason that birds can stand on power lines without being electrocuted?

• Birds have special insulating feathers.

• Birds do not complete a circuit.

• Birds are immune to electricity.

• Birds have a high resistance to electricity.

Your electric clothes dryer is plugged in. What is happening to the electrical energy coming from the outlet that causes your clothes to dry?

• The electrical energy is converted into heat energy, which evaporates the moisture in the clothes.

• The electrical energy is stored in the dryer for later use.

• The electrical energy is converted into sound energy to dry the clothes.

• The electrical energy is used to cool the clothes.

In an electric light bulb, electrical energy is converted into-

• gravitational energy

• sound energy

• kinetic energy

• light energy

Which of the following are good conductors of electricity, while others are not?

• Aluminum

• Copper

• Plastic

A hair dryer that is turned on concerts electrical energy into which two forms of energy?

• sound and potential

• electrical and sound

• heat and sound

• sound and potential

What is not a common source of electrical energy?

• water

• solar

• plastic

A ​ (a)   is a pathway for ​ (b)   to flow through.

• circuit
• electricity
• energy
• producer
• open circuit 

In terms of circuits, explain why a coffee maker with the power switch turned off doesn’t make coffee