6.7

Tell the person next to you…

1.              If the field lines are close together, what does this tell you about the field?

strong

2.              If the field lines are widely spaced, what does this tell you about the field?

weak

3.              If the magnetic field lines are parallel to each other, what does this tell you about the field?

Uniform, constant

Answers

The field is strong

2.              The field is weak

3.              The field is of a constant strength - a "uniform" field

 

 

 

 

6.7

28 November 2011

15:08

·         6.7 know how to use two permanent magnets to produce a uniform magnetic field pattern

·  When the field lines are parallel, the field will be uniform

See the full gallery on Posterous

6.4

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

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 Field around bar magnet simulation

28 November 2011

15:06

Website:

http://www.walter-fendt.de/ph14e/mfbar.htm

 

Example:

http://maddog11physics.posterous.com/bar-magnet

 

 

6.4 plenary questions and Earth's Magnetic Field

01 December 2011

19:12

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

6.5 and 6.3

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 (drop it and it doesn’t lose its magnetism)

·         Iron is a magnetically soft material.  It can be magnetised, but easily loses its magnetism (drop it it does lose it’s magnetisim)

P6 student objectives sheet and keywords

P6 IGCSE Physics Student Objectives.doc Download this file

Keywords Interactive Topic 6

 

 

 

Improvement Plan - A4

Improvement Plan - A4.doc Download this file