Electricity & Sound

How does a switch work?

• It opens and closes the circuit
• It makes the light bulb brighter
• It is a power supply

What supplies the energy in an electric circuit?

• light bulb
• conductor
• wire
• battery

A fifth grade class constructed this circuit.  Which 2 of these objects most likely made the light glow when connected to points X and Y?

• aluminum foil

• rubber band

• copper wire

• plastic ruler

• folded paper

An electrician is wearing rubber gloves. What is the purpose of the rubber gloves?

• produce electricity

• create an electrical circuit
• protect the electrician

• keep him dry

Which of these substances conducts electricity the best?

• wood
• brick
• copper
• plastic

What material would be worst to use as the pan handle?

• rubber
• wood

• plastic

• iron

Which type of circuit has more than one path for the electrical current?

• The series circuit

• The parallel circuit

Tasha made this model. In her model the bulb is not lit.

Which of these statements best explains why the bulb is not lit?

• The wires are connected to the wrong battery terminals.

• The bulb is burned out.

• The switch is open.

• A wire is missing.

Alicia turned on a light switch. What does turning a switch on do?

• open a circuit, allowing electricity to flow

• close a circuit, allowing electricity to flow

• open a circuit, stopping electricity from flowing

• Close a circuit, stopping electricity from flowing

What supplies the energy in a simple circuit?

• wires
• battery
• bulb