6.4

Plenary questions and the Earth's Magnetic field.ppt Download this file

 

6.4

28 November 2011

15:07

•        6.4 understand the term ‘magnetic field line’

Observing the magnetic field around a bar magnet and a wire

magnetic field around a bar magnet and wire

 

·         Use iron filings to observe the magnetic field around a bar magnet

·         Use plotting compasses to observe the field

·         Use the 3D field demonstrator to observe field

 

 

 

6.4 plenary questions and Earth's Magnetic Field

01 December 2011

19:12

<<Plenary questions and the Earth's Magnetic field.ppt>>

 

 

6.4 plenary 2

01 December 2011

19:14

·         Can you stop a magnetic field?

·         Watch the incredible flying paperclip demo to find out!

·         Now you can try with your hand...

6.5 and 6.3

6.5 and 6.3

28 November 2011

15:07

·         6.5 understand that magnetism is induced in some materials when they are placed in a magnetic field

·         6.3 recall the properties of magnetically hard and soft materials

Practical

1.      Stroke a magnet along a steel bar and an iron bar

2.      Try picking up some bar clips

3.      Bang both bars on the desk

4.      Now try picking up the paperclips again

5.      Repeat the experiment but this time put the bars inside an electromagnet instead of stroking them

 

 

 

 

 

 

 

Explanation

·         Steel is a magnetically hard material.  It retains its magnetism when magnetised

·         Iron is a magnetically soft material.  It can be magnetised, but easily loses its magnetism

6.6

6.4

Plenary questions and the Earth's Magnetic field.ppt Download this file

________________________________________

6.4

28 November 2011

15:07

• 6.4 understand the term ‘magnetic field line’

Observing the magnetic field around a bar magnet and a wire

magnetic field around a bar magnet and wirehttp://www.youtube.com/watch?v=pjJSa148CKI

· Use iron filings to observe the magnetic field around a bar magnet
· Use plotting compasses to observe the field
· Use the 3D field demonstrator to observe field

6.4 plenary questions and Earth's Magnetic Field

01 December 2011

19:12

>

6.4 plenary 2

01 December 2011

19:14
· Can you stop a magnetic field?
· Watch the incredible flying paperclip demo to find out!
· Now you can try with your hand...

6.5 and 6.3

________________________________________

Subject: 6.5 and 6.3

6.5 and 6.3

28 November 2011

15:07
· 6.5 understand that magnetism is induced in some materials when they are placed in a magnetic field
· 6.3 recall the properties of magnetically hard and soft materials

Practical
1. Stroke a magnet along a steel bar and an iron bar
2. Try picking up some bar clips
3. Bang both bars on the desk
4. Now try picking up the paperclips again
5. Repeat the experiment but this time put the bars inside an electromagnet instead of stroking them

Explanation
· Steel is a magnetically hard material. It retains its magnetism when magnetised
· Iron is a magnetically soft material. It can be magnetised, but easily loses its magnetism

6.2

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…

(Picture on page "6.4 6.5 6.6 6")

 

 

 

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>>

Attraction and repulsion quiz.swf Download this file

6b Plenary Multichoice questions.pptx Download this file

P6 Keywords games - instructions for embedding into your Posterous blog

 

 

 

 

·         This is what you get…

http://maddog11physics.posterous.com/p6-keywords