5 Written Questions

1. danish physicist and chemist, noticed compass needle move as if it were a magnet
2. very strong magnetic properties, do not act randomly, atoms align themselves with neighboring atoms
3. secondary coil has more turns than primary coil, greater induced voltage
4. steel is an example, it is easy to magnetize but loses it magnetization easily
5. electromagnets are magnets created by what in wires?

5 Matching Questions

1. electromagnetic induction
2. resistance
3. gauss
4. electromagnets
5. add another battery, add more turns

1. a when you use a moving magnet to create electric current or voltage
2. b magnets created by electric current flowing in wires
3. c a unit used to measure the strength of a magnetic field
4. d what can you do yo increase an electromagnet's strength?
5. e when adding more turns in order to strengthen the magnetism, you also increase the what of the coil?

5 Multiple Choice Questions

1. a magnet that is free to spin, spins until it lines up with any magnetic field that is present
   1. armature
   2. resistance
   3. solenoid
   4. compass needle
2. aluminum is an example, the magnetism of individual electrons to not complete, this makes it into a tiny magnet with a north and south pole
   1. paramagnetic materials
   2. permanent magnet
   3. ferromagnetic materials
   4. diamagnetic materials
3. the rotating part of the motor, including the electromagnets
   1. rotor
   2. gauss
   3. commutator
   4. armature
4. an electromagnetic device is a coil with many turns
   1. stepped up
   2. rotor
   3. gauss
   4. solenoid
5. the variability in materials comes from what?
   1. paramagnetic materials
   2. shape and distribution of the orbitals
   3. hans christian oesrted
   4. amount of current in the coil

5 True/False Questions

1. amount of current in the coil → the strength of an electromagnet's field can be changed by changing the what?

   True        False

2. right hand rule → determines the north pole and south pole

   True        False

3. permanent magnet → steel is an example, it is easy to magnetize but loses it magnetization easily

   True        False

4. proportional → what is a disk called?

   True        False

5. diamagnetic materials → aluminum is an example, the magnetism of individual electrons to not complete, this makes it into a tiny magnet with a north and south pole

   True        False