Download Electricity and Magnets

Electricity and Magnetism
http://video.mit.edu/watch/the-wonders-of-electricity-and-magnetism-9964/
1. Name the 2 things the speaker
always carried with him
2. Can life exist without electricity?
Why or why not?
3. How is magnetism inseparable from
electricity?
4. Describe the historical importance
of amber
Magnetism
The attraction of a magnet for another object
Attraction
When two magnets or magnetic
objects are close to each other,
there is a force that attracts the
poles together
Repulsion
When two magnetic objects have like
poles facing each other, the magnetic
force pushes them apart.
Magnetic Pole
The area of a magnet where the effect is the
strongest. The magnetic field is strongest at
the poles of a magnet. It allows magnets to be
attracted to each other without touching
 Magnets may be cut in half, but each piece
maintains its magnetic properties
MRI
Magnetic Resonance Imaging
How does MRI work?
http://www.youtube.com/watch?v=pGcZvSG805Y
What is the difference? MRI
vs. CT Scan?
http://www.youtube.com/watch?v=BRPD-B_hpbo
Magnetism
http://www.youtube.com/watch?v=-3ijMVZPHD8
1-Why do magnets stick?
2-Can you see magnetism?
3- What mineral can be made into a magnet?
4- What 3 things can stick to a magnet?
5- What are moving electrons called?
6- What is an electromagnet?
7- Why do compasses work?
8- Where is the Earth’s magnetic field?
9- How do electrons move in a magnet?
10-What happens when you break a magnet in ½?
11-How can you make a magnet out of a pin?
12- Name 6 everyday objects made of magnets.