SPI  0807:12.2
This presentation is the property of its rightful owner.
Sponsored Links
1 / 9

The Cause of Magnetism PowerPoint PPT Presentation


  • 76 Views
  • Uploaded on
  • Presentation posted in: General

SPI 0807:12.2 Electromagnetism. Notes. Science. The Cause of Magnetism. Atoms and Domains In materials such as iron, nickel, and cobalt, groups of atoms are in areas called domains. The north and south poles in a domain line up and make a strong magnetic field. SPI 0807:12.2

Download Presentation

The Cause of Magnetism

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


The cause of magnetism

SPI 0807:12.2

Electromagnetism

Notes

Science

The Cause of Magnetism

  • Atoms and Domains

  • In materials such as iron, nickel, and cobalt, groups of atoms are

  • in areas called domains.

  • The north and south poles in a domain line up and make a

  • strong magnetic field.


The cause of magnetism

SPI 0807:12.2

Electromagnetism

Notes

Science

  • Electromagnetism

  • Is the interaction between electricity and magnetism.

  • Electric current produces a magnetic field.

  • An electromagnet consists of a solenoid wrapped around an iron core.

  • Turning Electromagnets On and Off:

  • Unlike permanent magnets, electromagnets can be turned on and off as needed.

  • Electromagnetic Strength

  • You can adjust the strength of an electromagnet two ways

  • 1) Use more electrical current

  • 2) Use more coils


The cause of magnetism

SPI 0807:12.2

Electromagnetism

Notes

Science

  • How do we use electromagnets?

  • Found in electrical motors and switches

  • To lift objects

  • Example: Junkyard crane-magnets

  • Example: Maglev trains

  • To propel objects

  • Example: Railguns as weapons

  • Example: Railguns as launch platforms

  • To look inside of people

  • Example: Magnetic Resonance Imaging (MRI)


The cause of magnetism

SPI 0807:12.2

Electromagnetism

Notes

Science

  • How do we use electromagnets?

  • To lift objects

  • Example: Junkyard crane-magnets

  • Video Clip: Scrapyard Electromagnet In Action


The cause of magnetism

SPI 0807:12.2

Electromagnetism

Notes

Science

  • How do we use electromagnets?

  • To lift objects

  • Example: Maglev trains (magnetic leviation-reduces friction)

  • Video Clip: How Maglev Trains Work


The cause of magnetism

SPI 0807:12.2

Electromagnetism

Notes

Science

  • How do we use electromagnets?

  • To propel objects

  • Example: Railguns as weapons

  • Video Clip: U.S. Navy Railgun


The cause of magnetism

SPI 0807:12.2

Electromagnetism

Notes

Science

  • How do we use electromagnets?

  • To propel objects

  • Example: Railguns as launch platforms (for space)


The cause of magnetism

SPI 0807:12.2

Electromagnetism

Notes

Science

  • How do we use electromagnets?

  • To propel objects

  • Example: Railguns as launch platforms (for aircraft)

  • Video Clip: Aircraft Carrier Launcher


The cause of magnetism

SPI 0807:12.2

Electromagnetism

Notes

Science

  • How do we use electromagnets?

  • To look inside of people

  • Example: Magnetic Resonance Imaging (MRI)

  • Video Clip: MRI Magnetic Field Strength


  • Login