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Magnets and Magnetic Fields (Grade 8)

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Magnets and Magnetic Fields

1. 
Look at the magnet:

U Magnets Down

A second magnet is placed directly below this magnet. Which magnet would be most strongly attracted to the magnet above when placed below it?
  1. U Magnets Down
  2. U Magnets Right
  3. U Magnets Up
  4. U Magnets Left
 
2. 
Two bar magnets are arranged as shown below:

Bar Magnets S NBar Magnets N S

Which diagram below best represents the magnetic field lines for the bar magnets?
  1. Magnetic Lines - Unlike Poles
  2. Magnetic Lines Of Forces
  3. Magnetic Lines - Like Poles
3. 
The diagram below shows the magnetic field lines for a bar magnet. Which statement below best describes the strength of the magnetic field for the bar magnet?
Magnetic Lines Of Forces
  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?
  1. Bar Magnets S NBar Magnets N SBar Magnets S N
  2. Bar Magnets S NBar Magnets S NBar Magnets S N
  3. Bar Magnets N SBar Magnets S NBar Magnets S N
  4. Bar Magnets N SBar Magnets N SBar Magnets S N
5. 
If the bar magnet below is carefully cut in half into two smaller magnets, they will each have
Bar Magnets S N
  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 below?
Bar Magnets N S
  1. [math]->[/math]
  2. [math]uarr[/math]
  3. [math]larr[/math]
  4. [math]darr[/math]
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. U Magnets Left[math]rarr[/math]
  2. U Magnets Left[math]larr[/math]
  3. U Magnets Left[math]uarr[/math]
  4. U Magnets Left[math]darr[/math]
 
10. 
You hold a magnetic compass and observe the needle spin until it points north. The north end of the compass needle points toward the earth's
  1. magnetic north pole
  2. magnetic south pole
  3. geographic north pole
  4. geographic south pole

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