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Eighth Grade (Grade 8) Magnetism and Electricity Questions

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Grade 8 Magnetism and Electricity
Grade 8 Magnetism and Electricity
Grade 8 Magnetism and Electricity
Grade 8 Magnetism and Electricity
Earth's magnetic field has
  1. an east and west pole.
  2. a north and south pole.
  3. a never changing field.
  4. none of the above.
Grade 8 Magnetism and Electricity
Grade 8 Magnetism and Electricity
Grade 8 Magnetism and Electricity
Grade 8 Magnetism and Electricity
Magnetic fields are created by
  1. magnetic field lines.
  2. potential energy of molecules.
  3. spinning neutrons.
  4. moving electric charges.
Grade 8 Magnetism and Electricity
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
Grade 8 Magnetism and Electricity
Grade 8 Magnetism and Electricity
Grade 8 Magnetism and Electricity
Iron is a magnetic material, but an iron nail does not behave like a magnet because
  1. its magnetic domains are aligned.
  2. it contains too few magnetic domains.
  3. the atoms in the iron exert a force on all the other atoms.
  4. its magnetic domains are arranged randomly.
Grade 8 Magnetism and Electricity
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?
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.
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