NGSS.MS-PS2-3

Where is the force of attraction the strongest on a magnet?

• at the poles
• in the middle
• above the magnet
• below the magnet

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NGSS.MS-PS2-3

What device is made of coils of wire with an electrical current passing through it in order to generate a magnetic field?  

• Electromagnet 
• Generator
• Electron Magnet 
• Motor

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NGSS.MS-PS2-3

The closer the charges, the ___________ the force between them

• closer
• further
• stronger
• weaker

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NGSS.MS-PS2-3

Which is NOT a conductor

• 
• 
• 
• 

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NGSS.MS-PS2-3

Which materials are magnetic?

• Wood

• Zinc

• Cobalt

• Aluminium

• All the Above

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NGSS.MS-PS2-3

Observe the photo of an electromagnet.

Electric current flows through the wire. What is the name for this coiled wire that is wrapped around the iron core of the electromagnet?

• generator

• solenoid

• transformer

• trapezoid

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NGSS.MS-PS2-3

A student is planning an investigation to determine the relationship between magnetism and the movement of electrical charge in a circuit. A diagram of the circuit is shown.

The student is planning to make changes to the circuit to see how the changes will affect the number of paper clips that are picked up by the electromagnet. What is the likely effect of the magnetic field if the student adds more coils?

• increase

• decrease

• no change

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NGSS.MS-PS2-3

The ball on the string is being repelled (pushed away) by the metal bar.

What must be the charge on the ball?

• postivie

• neutral

• negative

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NGSS.MS-PS2-3

Why does a compass needle point north?

• The compass is a bar magnet

• Because north is up and you know that up is always north or the stratosphere.

• Because it's magic

• Because the North end of the compass lines up with the Earth's magnetic south pole

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NGSS.MS-PS2-3

The magnetic ____________ around a bar magnet is shown above.

• legs

• flowers

• field

• direction

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