Notes on Magnets and Magnetic Field

Match the key terms with their definitions.

• one of the two opposite ends of a magnet

• Attract

• a line that connects opposite magnetic poles and represents the strength of the magnetic field

• Magnetic field line

• the space around a magnet in which magnetic force can act on objects

• Repel

• to push objects away from each other

• Magnetic field

• to pull objects toward one another

• Magnetic pole

What happens when two north poles of a magnet are placed together?

• they repel
• they attract
• they cancel each other out
• the strength of the magnet is doubled

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Are the magnetic field lines in the picture correct?

• Yes, because they point from north to south.

• No, because they point from north to south (they're supposed to go the other way).

• Yes, because the North pole is on the left in all pictures.

• No, because the North pole is on the left in all pictures (it's supposed to be on the right).

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A ________ is a device that has a magnet on a needle that spins freely. It is used for navigation because its needle usually points north.

• calculator

• ruler

• compass

• map

The area of magnetic force around a magnet is known as its _____________.

• magnetic field

• magnetic declination

• magnetic fan lines

• magnetic tan lines

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Which of the follow animals DO NOT have cells containing metal that act like a compass?

• bees

• bats

• birds

• Earthworms

Is this evidence card showing useful evidence? Why or why not? Explain.

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Draw two magnets that will repel. Make sure to label the magnets with N and S.

Draw the magnetic field lines around this magnet. Make sure your lines have arrows.

What does refute mean?

• to provide evidence supporting a claim

• to provide evidence that goes against a claim

• to provide evidence that must be logged in a table

• to provide evidence that can only be seen in person

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