Unit 2 Lesson 2 Quiz

The electric circuit below consists of a battery, a switch, and three light bulbs.  What type of circuit is shown in the diagram?

• closed circuit 
• series circuit
• magnetic circuit 
• parallel circuit

The electric circuit below consists of a battery, a switch, and three light bulbs.  What will happen if the switch is closed?

• Bulbs A, B, and C will go out. 
• Bulbs A, B, and C will become lit. 
• The battery will recharge.
• Charges will stop flowing through the circuit.

Some materials conduct electricity, but others do not. Which of these materials is an electrical conductor?

• nail
• plastic ruler
• rubber band
• toothpick

The illustration shows a circuit that includes four light bulbs: A, B, C, and D. When the switch is closed, all of the light bulbs are on.  What happens to Bulbs A and D if Bulbs B and C are removed?

• Bulbs A and D go out. 
• Bulbs A and D stay on.
• Bulb A stays on and Bulb D goes out. 
• Bulb A goes out and Bulb D stays on. 

Erica looked at a group of objects and classified them as electrical conductors or insulators. She made the table below to show her results.  How many objects are not classified correctly?

• 0
• 1
• 2
• 4

Jayden wants to compare how well different materials conduct electricity. He builds a circuit and uses various objects to complete the circuit. He compares how brightly a light bulb glows using each object. The table below shows the results.  Which object is the BEST insulator of electricity?

• nail
• crayon
• eraser
• pencil lead

What effect will one positive charge have on another positive charge?

• They repel each other from a distance.
• They repel each other only when they touch.
• They attract each other from a distance.
• They attract each other only when they touch. 

We see lightning as a flash of light in the sky. Lightning can occur during rainstorms and hot summer days. Lightning is an example of what?

• electric charge
• static electricity
• electric current
• electrostatic discharge

What is the main difference between an electric current and static electricity?

• Electrons in an electric current move by electrostatic discharge.
• Static electricity occurs in at least two objects. An electric current occurs in only one.
• Electric charges flow in an electric current but not in static electricity.
• Negative charges form static electricity. An electric current involves positive charges. 

Clayton tries to build an electric circuit using a battery, a light bulb, a paper clip, and copper wire. The diagram below shows what he builds.  Which statement BEST explains why the circuit would not conduct electricity?

• The circuit lacks a power source. 
• The circuit is not a complete loop.
• The light bulb uses the electric current. 
• The paper clip stops the electric current.