Name: Class: Date: materials. Objects that are made of and will be attracted by a magnet.

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1 1 What Is a Magnet? Fill in the blanks below. attract objects that are made of materials. Objects that are made of and will be attracted by a magnet. A natural magnet is also called a. are made of materials. Circle the objects below that can be attracted by a magnet. Cross out the metal objects below that cannot be attracted by a magnet. Handkerchief Steel ruler Eraser Wooden doll G o l d r i n g Plastic cup Steel paper clip Aluminium can Iron nail Science SMART Teacher s Guide Grade 4 341

2 2 What Are the Properties of? Tick (ü) the boxes next to the statements that are TRUE. 1. A magnet can attract all metals. 2. A magnet cannot attract all non-metals. 3. A magnet will always point in an East-West direction. 4. The North pole of a magnet will repel the South pole of another magnet. 5. A magnet is strongest at its poles A magnet can attract or repel another magnet from a distance. A magnet cannot attract an object made of magnetic material from a distance. 8. Magnetism can pass through non-magnetic materials. 342 Additional Teacher s Resources

3 3 How Are Made? Study the flowchart below. Fill in the blanks with methods of making magnets. Methods of making an iron nail into a magnet: Start Does the iron nail need to come into contact with another magnet? Yes Does the iron nail keep its magnetism even when not in contact with a magnet? Yes Z No No X Y X: Y: Z: Why is it better to use electromagnets than ordinary magnets when you need to lift and drop objects made of magnetic materials? Science SMART Teacher s Guide Grade 4 343

4 4 What Are the Uses of? Match each picture to the correct use of the magnets. The magnet helps to hold notes to surfaces that are made of magnetic materials. The magnet always points to Earth s North Pole. It helps us to find our direction. The magnet attracts only rubbish that is made of magnetic materials. These magnetic materials are separated from the rubbish and recycled. The magnet allows a Maglev train to float. This allows Maglev trains to move much faster than normal trains. 344 Additional Teacher s Resources

5 Fun and Games Solve the Puzzle! Unscramble each of the words below and fill them in the coloured boxes. When you are done, fill in the words according to their colours in the blanks below to find out a property of magnets. The first letter of each word has been given. a. P b. L c. R d. A e. U SOLEP KILE PREEL TARCTAT LUKINE Property of magnets: Science SMART Teacher s Guide Grade 4 345

6 Exam Practice Process skills: Observing, Analysing, Inferring Tom had four iron bars. He placed them next to one another to test if any of them were magnets. His observations are shown below. attract Bar A Bar B neither attract nor repel Bar B Bar C attract Bar C Bar D repel Bar A Bar D Fill in the table below to indicate which bars are magnets and which are non-magnets. Non-magnets Hint: Can two non-magnets repel each other? Can a magnet and a non-magnet repel each other? 346 Additional Teacher s Resources

7 Science SMART Teacher s Guide Grade Gold ring Aluminium can Wooden doll Steel paper clip Steel ruler Handkerchief Iron nail Plastic cup Eraser Circle the objects below that can be attracted by a magnet. Cross out the metal objects below that cannot be attracted by a magnet. A natural magnet is also called a lodestone. are made of magnetic materials. attracted by a magnet. attract objects that are made of magnetic materials. iron steel Objects that are made of and will be A magnet is strongest at its poles. A magnet can attract or repel another magnet from a distance. A magnet cannot attract an object made of magnetic material from a distance. Magnetism can pass through non-magnetic materials The North pole of a magnet will repel the South pole of another magnet. A magnet will always point in an East-West direction A magnet cannot attract all non-metals. A magnet can attract all metals Tick (ü) the boxes next to the statements that are TRUE. Fill in the blanks below. What Are the Properties of? 1 What Is a Magnet?

8 Z 4 Additional Teacher s Resources X Y: Yes Y Touch method No Z: Yes Stroke method Does the iron nail keep its magnetism even when not in contact with a magnet? and drop objects quickly. more easily than ordinary magnets. Thus, electromagnets can attract The magnetism of electromagnets can be switched on and off much Why is it better to use electromagnets than ordinary magnets when you need to lift and drop objects made of magnetic materials? X: Electrical method No Does the iron nail need to come into contact with another magnet? Start Methods of making an iron nail into a magnet: The magnet allows a Maglev train to float. This allows Maglev trains to move much faster than normal trains. The magnet attracts only rubbish that is made of magnetic materials. These magnetic materials are separated from the rubbish and recycled. The magnet always points to Earth s North Pole. It helps us to find our direction. The magnet helps to hold notes to surfaces that are made of magnetic materials. Match each picture to the correct use of the magnets. Study the flowchart below. Fill in the blanks with methods of making magnets. What Are the Uses of? 3 How Are Made? Chapter 6 348

9 Science SMART Teacher s Guide Grade Solve the Puzzle! K P T L I E T N L R A U b. c. d. e. T TARCTAT ATTRACT REPEL LUKINE PREEL POLES E C KILE SOLEP UNLIKE K A L S POLES I R E E E LIKE Property of magnets: L O P a. Unscramble each of the words below and fill them in the coloured boxes. When you are done, fill in the words according to their colours in the blanks below to find out a property of magnets. The first letter of each word has been given. Fun and Games repel attract neither attract nor repel Bar D Bar D Bar C Bar B Non-magnets Bar B Bar C Bar A Bar D Can two non-magnets repel each other? Can a magnet and a non-magnet repel each other? Hint: Fill in the table below to indicate which bars are magnets and which are non-magnets. Bar A Bar C Bar B Bar A attract Tom had four iron bars. He placed them next to one another to test if any of them were magnets. His observations are shown below. Process skills: Observing, Analysing, Inferring Exam Practice

10 Glossary Chapter 6: Attract Electrical method Electromagnet Like poles Lodestone Magnetism North pole Repel Stroke method South pole Touch method Unlike poles When opposite poles of magnets are pulled towards each other The use of electric current running through a wire coiled round a magnetic material to make it a magnet Temporary magnet made using the electrical method Same poles of magnets A mineral which is naturally magnetic Force of attraction of a magnet One end of a magnet which, when suspended freely, points North When similar poles of magnets push each other away Running a magnet along a magnetic material in a circular motion to make the magnetic material a temporary magnet One end of a magnet which, when suspended freely, points South Turning a magnetic material into a temporary magnet by having a magnet come into contact with it Different poles of magnets Chapter Glossary