Pretest for Electromagnetism

What does magnets repelling mean?

• Magnets move away from each other

• Magnets do not have magnetism

• Magnets move towards each other

Tags

NGSS.3-PS2-3

Electromagnetism is a magnetism produced by an electric current.

• True

• False

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Electric current can flow through a wire only if it forms a ____

• Open Loop

• Closed Loop

A closed loop through which current can flow is called an ____

• Electric Force

• Electric Current

• Electric Circuit

Which dude discovered that current in a wire caused a

deflection in a magnetic compass?

• Tesla

• Faraday

• Maxwell

• Oersted

Tags

NGSS.HS-PS2-5

Which area of the bar magnet has the strongest magnetic field effects?

• A (closer field lines near poles = stronger)

• B (Field lines are straighter = stronger)

• C (side of magnet is stronger)

• D (field lines furthest apart = stronger)

Tags

NGSS.MS-PS2-3

True or false: Sometimes magnets break into pieces that only show magnetism on one side (which is called a monopole).

• True

• False

What kind of magnet can be turned on and off?

• refridgerator magnet
• electromagnet
• magnetite
• iron

Tags

NGSS.MS-PS2-3

What is true about electricity and magnetic fields?

• Electricity is needed to create any magnet.
• Electricity always creates a magnetic field.
• Electricity is stronger than a magnetic field.
• Electricity prevents magnetic fields from occurring.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

How do electromagnets differ from regular magnets? 

• A. They  can be turned off and on 
• B. Their polarity can be reversed
• C. Their strength can be changed
• D. All of the above

Tags

NGSS.MS-PS2-3