October 9 DOL

Look at the image of a typical wire. Choose the words to finish the sentence. The part labeled A is _________. The part labeled B is _________.

• a conductor, a conductor

• a conductor, an insulator

• an insulator, a conductor

• an insulator, an insulator

A student made the electric circuit below. The light did not turn on. Which of the following statements is true about an object that can be used to complete the circuit?

• A nail can be used because it is an insulator.

• A toothpick can be used because it is a conductor.

• A plastic comb can be used because it is an insulator.

• An iron paper clip can be used because it is a conductor.

What is the purpose of an electrical insulator?

• The purpose of an electrical insulator is to conduct electricity quickly.

• The purpose of an electrical insulator is to stop the flow of electricity.

• The purpose of an electrical insulator is to complete the creation of a circuit.

• The purpose of an electrical insulator is to speed up the flow of electricity.

Which two materials could be used to block the flow of electricity?

• Wood and steel

• Plastic and iron

• Steel and rubber

• Wood and plastic

A student is using an electric circuit to determine which types of materials are conductors and insulators of electricity. She recorded the investigation results in the data table below.

• Metal key, paper clip, aluminum foil

• Water, rubber, wooden block

• Penny, scissors, toothpick

• Wire, string, paper

Tags

NGSS.4-PS3-2

NGSS.5-PS1-3