6.2 Starter
28 November 2011
14:52
Neodymium magnets are strong…
<<Attraction and repulsion quiz.swf>>
6.2 starter 2
01 December 2011
18:23
· Magnetic materials are attracted by magnets.
· Can you list the 5 magnetic materials?
(3 elements, 2 compounds)
Answer
3 elements
1. Fe (iron)
2. Co (cobalt)
3. Ni (nickel)
2 compounds
1. Steel (an alloy of iron)
2. Fe3O4 (magnetite, one of the oxides of iron)
And the exceptions that prove the rule… ?
· Magnet moves water - diamagnetism
· Levitating frog...
· Ferrofluids…
6.2
01 December 2011
18:21
· 6.2 recall that magnets repel and attract other magnets, and attract magnetic substances
Question
You have 3 bars that all look the exactly the same but they are made from:
1. a magnet
2. steel
3. aluminium
You are given a horseshoe magnet. How can you use this to tell which bar is which?
Answer
1. The bar magnet will be attracted to one pole of the horseshoe magnet and repelled by the other
2. The steel bar will be attracted to both poles of the horseshoe magnet
3. The aluminium bar will be attracted to neither pole of the horseshoe magnet
6.2 Plenary - Multichoice questions
01 December 2011
18:12
<<6b Plenary Multichoice questions.pptx>>
