Electricity and Magnetism

Which metals are primarily known to have magnetic properties?

• Lead, Tin, and Mercury

• Gold, Silver, and Platinum

• Copper, Aluminum, and Zinc

• Iron, Nickel, and Cobalt

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NGSS.MS-PS2-3

What happens when you bring similar magnetic poles together?

• They repel each other

• They neutralize each other's magnetic field

• They attract each other

• Nothing happens

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Why do opposite magnetic poles attract each other?

• Due to gravitational force

• Because of the alignment of their atoms

• Because of static electricity

• Due to the magnetic field interaction

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How do magnetic field lines illustrate the strength of a magnetic field?

• The farther they are, the stronger the field

• They do not indicate strength

• The closer they are, the weaker the field

• The closer they are, the stronger the field

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What is the primary function of a compass?

• To measure the intensity of magnetic fields

• To align with Earth's magnetic field

• To show the direction of the wind

• To detect electric fields

How can you visualize a magnetic field?

• Through a glass of water

• By using a flashlight

• With iron filings

• Using a bar magnet

What creates an electromagnet?

• Permanent magnets

• Electrical current flowing through a wire

• Rubbing a piece of iron against a magnet

• Placing a metal in a strong magnetic field

What happens to the magnetic field of an electromagnet when it is disconnected from electricity?

• It remains unchanged

• It reverses direction

• It disappears

• It becomes a permanent magnetic field

What demonstrates the relationship between electricity and magnetism?

• A compass needle moving in sunlight

• A magnet moving near a copper coil

• Two magnets attracting each other

• A battery and a wire creating a magnetic field

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NGSS.MS-PS2-5

Which of the following is not a use of electromagnets?

• In non-electric heaters

• In speakers

• In doorbells

• In motors

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