Ch. 3 Sec. 1What is electromagnetism?
electromagnetismrelationship  between electricity & magnetismelectric current produces magnetic field
Magnetic Field Map Iron filings show the magnetic field linesaround a wire with a current.           What is the shape of ...
solenoid coilof wire w/ current strength of magnetic field increases  as # of loops (coils) increase
The magnetic field around a solenoidresembles that of a bar magnet.
electromagnetsolenoid   w/ ferromagnetic corestrong magnet that can be turned on & off
Electromagnets [02:16]
ways to increase strength of         electromagnets1. Increase current2. Add more loops of wire3. Wind coils closer togeth...
electromagnets at work     doorbell                junkyard                  crane
Roller coasters uses electromagnets to launch and stop the                       roller coaster.
Olivias Challenge: Build Your Own Electromagnet [00:24]
Make an electromagnet1. How many paper clips will your   electromagnet hold?2. Can you hang paper clips on both ends   of ...
Additional experiments to try: 1. Change the shape of the    armature (coil of wire) 2. Hold the magnet above    the coil.
Electromagnet experiment # of coils        # of paper                   clips picked up Coils close together or far apart ...
8th Grade Ch. 3 Sec. 1 What is Electromagnetism?
8th Grade Ch. 3 Sec. 1 What is Electromagnetism?
8th Grade Ch. 3 Sec. 1 What is Electromagnetism?
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8th Grade Ch. 3 Sec. 1 What is Electromagnetism?

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8th Grade Ch. 3 Sec. 1 What is Electromagnetism?

  1. 1. Ch. 3 Sec. 1What is electromagnetism?
  2. 2. electromagnetismrelationship between electricity & magnetismelectric current produces magnetic field
  3. 3. Magnetic Field Map Iron filings show the magnetic field linesaround a wire with a current. What is the shape of the field lines?
  4. 4. solenoid coilof wire w/ current strength of magnetic field increases as # of loops (coils) increase
  5. 5. The magnetic field around a solenoidresembles that of a bar magnet.
  6. 6. electromagnetsolenoid w/ ferromagnetic corestrong magnet that can be turned on & off
  7. 7. Electromagnets [02:16]
  8. 8. ways to increase strength of electromagnets1. Increase current2. Add more loops of wire3. Wind coils closer together4. Use stronger ferromagnetic material for core Online Interactive Activity-Make an electromagnet
  9. 9. electromagnets at work doorbell junkyard crane
  10. 10. Roller coasters uses electromagnets to launch and stop the roller coaster.
  11. 11. Olivias Challenge: Build Your Own Electromagnet [00:24]
  12. 12. Make an electromagnet1. How many paper clips will your electromagnet hold?2. Can you hang paper clips on both ends of the nail?3. How can you make your electromagnet stronger?4. After using the electromagnet, remove the iron nail. Can the nail still pick things up? If so, why?
  13. 13. Additional experiments to try: 1. Change the shape of the armature (coil of wire) 2. Hold the magnet above the coil.
  14. 14. Electromagnet experiment # of coils # of paper clips picked up Coils close together or far apart Amount of current
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