Circuits Pretest

What is a circuit?

• a) A closed loop that allows electricity to flow
• b) A chemical reaction
• c) An insulating material
• d) None of the above

An electrolyte is:

• a) A type of metal
• b) An ion-conducting solution
• c) A circuit component
• d) None of the above

Metals are good conductors of electricity.

• a) True
• b) False

Which of these is an insulating material?

• a) Copper
• b) Aluminum
• c) Plastic
• d) Both a and b

The anode in a battery does which of the following?

• a) Supplies electrons
• b) Accepts electrons
• c) Stores energy
• d) Conducts electricity

The purpose of a fruit battery is:

• a) To produce light
• b) To generate electrical current
• c) To demonstrate circuits
• d) Both b and c

A larger fruit will produce more electricity than a smaller one of the same type because:

• a) It has more electrolytes
• b) It can hold more wires
• c) Its color is brighter
• d) A and b

An electrochemical reaction is:

• a) A physical process
• b) A chemical process involving electron transfer
• c) What happens in a fruit battery
• d) Both b and c

You can test if a circuit is working by:

• a) Using a multimeter
• b) Seeing if a light turns on
• c) Listening for a sound
• d) All of the above

Night lights are an example of an application using basic circuits.

• a) True
• b) False