PS3.C.1 - Magnetism Quiz

The diagram shows the magnetic field surrounding a bar magnet. The closer together the lines of force, the stronger the magnetic field. According to the diagram, where is the magnetic field the strongest.

• north pole

• south pole

• both poles

• in the middle

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Alexandra was preparing to go on a hike in the woods. She gathered the equipment she would need and placed it on the kitchen counter. By chance, she placed her compass near an electrical outlet. Although the compass was not moving, the compass needle turned toward the outlet because....

• the electric current in the outlet produced a magnetic field

• the compass only works properly outside

• the kitchen counter was made of a ferrometal

• the kitchen has a microwave

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Which pair of magnets would result from cutting the magnet in half?

• 
• 
• 
• 

According to the diagram, which pair could both be north poles?

• A and B

• B and C

• A and C

• C and D

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The picture shows an experiment used to determine the effect of using more nails in the core of an electromagnet. Which of the following would make this a better-designed experiment?

• Using a different number of batteries for each electromagnet

• Using the same number of turns of wire for each electromagnet

• Inserting an ammeter in each circuit between the battery and the nails

• Using a different size battery for each electromagnet

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This structure produces power for use in the home by converting ........

• chemical energy into mechanical energy

• electrical energy into mechanical energy

• chemical energy into electrical energy

• mechanical energy into electrical energy

A magnet will not attract all metal objects. Which object below will a magnet not attract?

• Nail

• Foil

• Battery

• compass needle

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Harry wanted to find out how to make an electromagnet stronger. The results of his experiment are listed in the table above. According to his data, which of the following foes not make an electromagnet stronger?

• increasing the number of batteries that are connected

• increasing the number of wire turns around the core

• increasing the number of mails inside the core

• increasing the number of tacks used

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Scientists believe that magnetism is caused by the spin of certain atomic particles called....

• electrons

• protons

• neutrons

• magnetrons

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Looking at the diagram of a simple electric motor, what would be a way to increase the speed of the fan.

• decrease the coil size

• decrease the size of the permanent magnet

• increase the fan size

• increase the battery size