Magnets and Magnetism

What is a magnet?

• A magnet is an object that produces a magnetic field.

• A magnet is used for cooking food

• A magnet is a type of metal

• A magnet is a type of battery

What are the two poles of a magnet called?

• Positive pole and Negative pole

• Top pole and Bottom pole

• North pole and South pole

• East pole and West pole

What is the invisible area around a magnet where its magnetic force is felt?

• magnetic field

• force radius

• magnetic zone

• invisible field

What happens when you bring two like poles of a magnet close together?

• They repel each other.

• They attract each other.

• They cancel each other out.

• They create a magnetic field.

What happens when you bring two unlike poles of a magnet close together?

• They will cancel each other out.

• They will repel each other.

• They will explode.

• They will attract each other.

What is the Earth's magnetic field?

• A protective shield made of solid gold surrounding the Earth

• A network of invisible lasers surrounding the Earth

• A giant magnet buried deep within the Earth's crust

• A powerful force field generated by the movement of molten iron in the Earth's outer core.

How can you demagnetize a magnet?

• Place the magnet in a freezer for a few minutes.

• Expose the magnet to direct sunlight for several hours.

• Heat the magnet to a high temperature and let it cool slowly.

• Submerge the magnet in water for an extended period of time.

What are some common everyday objects that are attracted to magnets?

• wooden spoon

• rubber band

• glass bottle

• iron nails, paper clips, refrigerator magnets, coins

What is magnetic induction?

• Magnetic induction is the process of generating electricity from a magnetic field.

• Magnetic induction is the process of creating a magnetic field by passing an electric current through a coil of wire.

• Magnetic induction is the process of converting electricity into magnetism.

• Magnetic induction is the process by which a material becomes magnetized when exposed to a magnetic field.

How can you determine the poles of an unmarked magnet?

• Use a compass to see which end points towards the South Pole

• Count the number of lines on each end to determine the poles

• Observe the end that points towards the North Pole as the North Pole of the magnet.

• Place the magnet in water and see which end floats to the top