WorksheetsUnit 3 Review
Total questions: 15
Worksheet time: 33mins
Which of the following is a conductor?
toothpick
plastic ruler
rubber band
paper clip
What is the purpose of the battery in this circuit?
to use the electric current
to connect the components
to provide a source of energy
to slow the flow of electricity
What will happen if the switch was closed?
The battery will recharge.
Bulbs A, B, and C will go out.
Bulbs A, B, and C will light up.
Charges will stop flowing.
Which statement explains why the light bulb won't light up?
The circuit lacks an energy source.
The circuit is not a complete loop.
The light bulb uses the electric current.
The paper clip stops the electric current.
What other items are needed to make a complete circuit?
a battery
a switch
an insulator
a conductor
Which of the following is an electric conductor?
glass bead
metal coin
plastic staw
wooden toothpick
Lori wants to know if a wooden craft stick can act as a conductor to close a circuit that turns on a light bulb. She implements a descriptive investigation by setting up a wooden stick as the switch and records her data. Which observation did she record?
The bulb remains unlit
The bulb becomes brighter
The bulb flickers on and off.
The bulb lights up for two seconds
Where should we place a piece of wire to make this image a complete circuit?
between the top of the paper clip and the bottom of the light bulb
between the top of the battery and the bottom of the light bulb
between the top of the paper clip and the bottom of the battery
between the top of the battery and the top of the paper clip
The first image shows a switch closed. The second image has the switch open. When the switch is open what happens to the light bulb?
It becomes duller.
It becomes brighter.
It stops glowing.
The wire burns out.
How many items are labeled correctly?
0
1
2
4
Which of the following includes good conductors of electricity?
Most pure liquids
All solids
Metals
Plastics
What is a conductor?
a material that slows or blocks the flow of electricity
a material through which electricity flows easily
a material that has no effect on the flow of electricity
a material that changes when electricity passes through it
What is an insulator?
a material that slows or blocks the flow of electricity
a material through which electricity flows easily
a material that has no effect on the flow of electricity
a material that changes when electricity passes through it
Esmeralda is going outside to play on a cold winter day. Which feature of her winter coat will insulate her from the cold?
It is lightweight.
It has fur at the edges.
It is thick and very fluffy.
It has a single layer of cloth
Daisy is planning to take a hot sandwich to school for lunch. She wants to wrap it in something to keep it warm. If she correctly differentiates between insulators and conductors, which wrap will she choose?
Foam wrap
Plastic wrap
Wax paper
Aluminum foil
