NGSS.MS-PS2-3

How do you make an electromagnet stronger?

• Add a motor and/or lightbulbs
• Add more light bulbs and/or wire coils
• add more wire coils and/or a switch
• add more wire coils and/or batteries

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NGSS.MS-PS2-3

Magnets that are arranged like this will _______. 

• move away from each other (repel)
• move towards each other (attract)

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NGSS.MS-PS2-3

Which answer best describes this image?

• The positive charge is repelling the negative charge.
• The blue charged object will repel the negatively red charged object.
• The positively charged red object will be attracted to the negatively charged blue object.

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NGSS.MS-PS2-3

If you wrap more coils around an electromagnet, it will become...

• brighter
• stronger
• weaker
• invisible

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NGSS.MS-PS2-3

S8P5abc A magnet sticks to a table leg. Based on this information, which material could the table leg be made of?

• iron

• wood

• copper

• aluminum

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NGSS.MS-PS2-3

An area that deflects and traps harmful particles, and results from the interaction between Earth's magnetic field and solar winds is called...

• atmosphere

• ozone layer

• magnetic fields

• magnetosphere

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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

A group of students carried out an investigation in which they caused the surface of a balloon to become electrically charged by rubbing the balloon on a piece of wool. They then brought the charged portion of the balloon close to a classmate’s hair and watched as the hair stuck to the balloon. The teacher explained that this was due to the negative charge on the hair. What was the charge on the balloon?

• negative

• neutral

• no charge

• positive

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NGSS.MS-PS2-3

Look at the set of objects to the right. We could

increase the electric force between Object A and

Object B by each of the following EXCEPT:

• Pushing them farther apart.

• Increasing the difference between their charges.

• Moving them closer together.

• Adding lots of negative charges to Object A.

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NGSS.MS-PS2-3

A coil of wire that has an iron core and that acts as a magnet when an electric current is in the coil is called a(n)

• magnetic pole

• electromagnet

• permanent magnet

• horseshoe magnet

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NGSS.MS-PS2-3