S8P5 Review 2023

An electromagnet is a magnet that

• its strength can be varied and turned on and off

• always has a magnetic field around it

• has very little strength

What are the components of the electromagnets?

• battery, wire and bulb

• battery , copper wire and paper clips

• battery, copper wire and iron nail

• battery, wire and aluminum

What do two unlike poles do when they are brought close together?

• Nothing
• Repel
• Attract
• Decrease

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is an example of a conductor?

• A wooden block
• A plastic fork
• A styrofoam cup
• Aluminum foil

Which statement best describes an insulator?

• A material that allows electricity to flow through it
• A material that does not allow liquids to flow through it
• A material that does not allow heat to flow through it
• A material that cools down quickly when heated

Which part of the Magnet is Strongest?

• Center
• Sides
• Poles

How could you make electromagnet stronger?

• adding more loops of wire

• increasing the current flowing through the wires

• increasing the size of the iron core

• None of the above

Tags

NGSS.HS-PS2-5

Which of the following is an insulator?

• Glass

• Copper

• Human body

Tags

NGSS.MS-PS2-3

• Conductor

• Insulator

Tags

NGSS.MS-PS3-3

If two charges repel each other, the two charges must be

• Positive and neutra
• Positive and negative
• positive and neutral
• negative and negative

Tags

NGSS.MS-PS2-3