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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As you move further away from an electric charge, the strength of an electric field

• Increases
• Decreases
• Stays the same
• Smiles and waves

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Magnetism created by an electric current

• electricity
• electromagnetism
• wind energy

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Electric fields are often associated with what other kind of field? 

• Magnetic Fields 
• Nuclear Fields 
• Particle Fields 
• Corn Fields 

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NGSS.MS-PS2-3

S8P5ac A student built a simple fan using an electromagnet, a permanent magnet, and a fan blade. When she connects the electromagnet to a single dry-cell battery, the fan blade turns. How would the student's fan most likely change if she connected it to two dry-cell batteries?

• The fan blade would turn faster

• The fan blade would turn slower

• The fan would turn in the opposite direction

• The fan would not turn at all

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Mr. Anady rubbed two balloons against his wool sweater for 30 seconds each. What will happen when the balloons are brought near each other?

• The balloons will repel each other.

• The balloons will attract each other.

• The balloons will become positively (+) charged.

• The balloons will pop.

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NGSS.MS-PS2-3

In a magnet the opposite poles will ___________.

• attract

• repel

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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

Where is the magnetic field the strongest around a bar magnet?

• far away from the magnet

• at the side of the magnet

• at the poles

• above the magnet

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What is the area around an object that can attract or repel other objects in that area?

• Magnetic Field
• Magnetic Fission
• Force
• Friction

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NGSS.MS-PS2-3