Showing posts with label Magnets. Show all posts
Showing posts with label Magnets. Show all posts

9/22/10

Electromagnets




Today we made electromagnets by wrapping an iron nail with copper wire and attaching it to a battery. The nail became a magnet, because the battery sent energy through the copper wire, and gave the nail magnetic energy.

Reflection questions:

What is magnetism?

What does it mean to attract?

What does it mean to repel?

How do we use magnets?

How can you classify metals based on their magnetic properties?

9/20/10

Magical Magnets!


Today we will be testing objects to see if they are attracted to magnets. Watch this video about the magic behind magnets.

Watch this video about the magic of magnets!