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2.5.2 Practical Sheet

Chapter 5 focuses on exploring contact and non-contact forces, specifically through practical experiments with magnets. It outlines methods for testing various materials for magnetism, observing the interactions between different poles of magnets, and analyzing the effects of intervening materials. The chapter also encourages evaluation of data and methods to measure magnetic forces over distances.

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14 views1 page

2.5.2 Practical Sheet

Chapter 5 focuses on exploring contact and non-contact forces, specifically through practical experiments with magnets. It outlines methods for testing various materials for magnetism, observing the interactions between different poles of magnets, and analyzing the effects of intervening materials. The chapter also encourages evaluation of data and methods to measure magnetic forces over distances.

Uploaded by

gwilliams
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Chapter 5: Exploring Contact and Non-Contact Forces

Practical 2.5.2 Exploring the behaviour of magnets


In this practical you will explore the behaviour of magnets and their effect on different materials.

Apparatus
materials that are available for testing
pair of bar magnets with N and S poles labelled
materials to make a cradle to suspend a magnet: paper/card, cotton thread, sticky tape
sheets of card, paper, plastic, foil
stand, boss and clamp

Method 1
1. Test the various materials with a bar magnet to identify which are magnetic and which are not.
2. Compare the results when using the N pole of the magnet to when using the S pole.
Record all of your observations.

Method 2
3. Suspend a magnet from a clamp and stand by using a cradle made from card/paper, sticky tape
and thread. The magnet should be free to rotate.

4. Slowly bring the S pole of a second magnet towards the N pole of the suspended magnet. What
effect does it have? What is the greatest distance over which the magnets will affect each other?
5. Repeat step 4, bringing N pole to N pole, and N pole to S pole.
Record all of your observations.
6. Find out if the magnetic forces can work through solid materials such as plastic, card, paper and
foil. Present all your observations in a clear format, such as a table.

Analyse and interpret data


1. What are the rules of attraction and repulsion between the two poles on separate magnets, and
between a magnet and magnetic materials?
2. Summarise the effect of putting other materials between magnets. Is the force affected?

Evaluate data and methods


3. Suggest how you could measure the size of magnetic forces over different distances using
additional apparatus such as a forcemeter or electronic balance.

Key Stage 3 Science Teacher Pack 2 © HarperCollinsPublishers Limited 2014

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