Electricity and Electromagnet

Will this circuit light the bulb? 

• Yes
• No

Will this circuit light the bulb? 

• Yes
• No

Tags

NGSS.MS-ETS1-1

Will the light bulb light up if the switch remains open as shown?

• Yes, because the circuit will be complete.
• Yes, because the battery will push the electric current.
• No, because the electric circuit is not complete.
• No, because the battery will push the electric current.

The circuit below lit the light bulb. What is the best claim we can make from this evidence?

• The metal key is an insulator.
• The metal key is a conductor.
• The wires are not conductors.
• The circuit is not complete.

Tags

NGSS.MS-PS2-3

Jill finds that all of the electric cords in her school are covered in plastic. Why is it important to cover the electric cords with plastic?

• Plastic is an insulator.
• Plastic is a conductor.
• Plastic is strong.
• Plastic will melt.

Tasha tested several items to see if they could conduct electricity.  Her data is shown below. What is the best claim she could make from her data?

• Wood is an insulator.
• Metal is an insulator.
• Keys are insulators.
• Toothpicks are conductors.

A student created the model of an electromagnet shown below. How could she best explain why the paper clip stuck to the nail?

• The electric current in the circuit magnetized the nail.
• The paper clips were magnets.
• The electric current in the circuit melted the nail.
• The nail heated up causing it to become a magnet.

Tags

NGSS.MS-PS2-3

A student built four electromagnets with different cores.  Everything else about the electromagnets was the same.    Which of the following cores would make her electromagnet the strongest?

• iron
• nickel
• wood
• plastic

Sarah planned an investigation to test the strength of electromagnets.  In one electromagnet she used two batteries and a small core.  In the other electromagnet she used one battery and a thicker core. Was this a fair test? 

• No, because she changed more than one variable.
• No, because the number of batteries does not matter.
• Yes, because the number of batteries does not matter.
• Yes, because she tested the correct number of variables.

Tags

NGSS.MS-ETS1-2

A circuit that has more than one path for electricity to follow is a...

• series
• static
• broken
• parallel