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# Magnets and Magnetic Fields (Grade 8)

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## Magnets and Magnetic Fields

1.
A second magnet is placed directly below the magnet shown.

Which magnet would be most strongly attracted to the magnet above when placed below it?

2.
Two bar magnets are arranged as shown.

Which diagram below best represents the magnetic field lines for the bar magnets?
3.
The diagram shows the magnetic field lines for a bar magnet. Which statement best describes the strength of the magnetic field for the bar magnet?
1. The magnetic field is strongest at north pole of the magnet.
2. The magnetic field is strongest at the south pole of the magnet.
3. The magnetic field is strongest at both the north and south poles.
4. The magnetic field is strongest in the region between the north and south poles.

4.
In which of the arrangements of magnets will all of the magnets attract?
5.
If the bar magnet is carefully cut in half into two smaller magnets, they will each have
1. only north poles.
2. only south poles.
3. north and south poles.
4. no north or south poles.

6.
Which direction should the magnetic field lines point at the end of the south pole of the bar magnet?
1. $->$
2. $uarr$
3. $larr$
4. $darr$
7.
Which statement about magnetic field lines is true?
1. they form straight lines
2. they cross one another
3. they have the same strength
4. they cannot travel through air

8.
Magnetic field lines that curve away from each other show                                      .
1. where the magnetic field is strongest
2. a magnetic domain
3. repulsion
4. attraction
9.
Which of the following arrows best represents the direction of the magnetic field between the ends of the U magnet?
1. $rarr$
2. $larr$
3. $uarr$
4. $darr$

10.
You hold a magnetic compass and observe the needle spin until it points north. The north end of the compass needle points toward Earth's
1. magnetic north pole.
2. magnetic south pole.
3. geographic north pole.
4. geographic south pole.
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