Unit 3 Review

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

Tags

NGSS.MS-PS1-2

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

Tags

NGSS.4-PS3-2

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

Tags

NGSS.MS-ETS1-1