Milady Electricity

Which of the following is an example of human-harnessed electricity?

• Lightning striking a building

• Getting a small shock when touching a doorknob

• A hydroelectric dam

• Socks sticking together in a dryer

Tags

NGSS.MS-ETS1-1

Based on your knowledge of electromagnets and permanent magnets, why would cranes in a junk yard use an electromagnet instead of a permanent magnet?

• Because an electromagnet is always stronger than a permanent magnet

• Because an electromagnet is always weaker than a permanent magnet

• Because only the electromagnet attracts metal

• Because the electromagnet can be turned on and off

Tags

NGSS.MS-PS2-3

​If the one bulb burned out, what would happen to the other bulb?

• stay lit

• not light up

• brighter

• dimmer

In the bottom of the picture, what explains why the balloons are repelling each other?

• opposites attract

• like charges in the balloon are repelling each other

• the helium has negative charges

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following best describes what is being created in the picture?

• static electricity

• potential energy

• magnetic field

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which electromagnet can lift more paperclips?

• example W

• example x

Tags

NGSS.MS-ETS1-1

Are the lights on in this circuit?

• yes, the lights are on

• no, the lights are off

Tags

NGSS.4-PS3-2

Which of the following would have a light bulb turned on?

• an open switch

• a closed switch

• a break in the wire

• a wire and a load only

What is a complete closed path that electrical currents travel?

• circuit

• switch

• resistance

• battery

Copper wire, an iron nail, and a battery can be used to make an

Tags

NGSS.MS-PS2-3