ABOUT MAGNETS www.sciencetutors.zoomshare.com
MAGNETS   OBJECTIVES To know that  some materials  are  magnetic  and others are  non-magnetic.   To know that  like poles  of a magnet  repel   while  unlike poles  of a magnet  attract.   S N N N S
ALL ABOUT   MAGNETS Look at the pile of rubbish.  Your task is to list which bits  (of rubbish) can be picked up  with a magnet for recycling. www.sciencetutors.zoomshare.com www.sciencetutors.zoomshare.com
ALL ABOUT   MAGNETS Look at the pile of rubbish.  Your task is to  list bits (of rubbish) which  cannot be picked up with a magnet for recycling. And explain why? www.sciencetutors.zoomshare.com www.sciencetutors.zoomshare.com
MAGNETIC OR  NON-MAGNETIC? LOOK AT LETTERS A-D and Discuss.   A B D C
POLES OF  A MAGNET Suggest practical ways of verifying the Poles of a Magnet.
REPULSION AND   ATTRACTION Write a complete sentence  using the following keywords: Attraction Repulsion  Like poles Unlike poles  S N S N N S N S TASK II TASK 1 Which of these bar magnets will attract each other and which pair will repel? And why? Copyright  ©   Ivan @ Science tutors 2006  www.sciencetutors.zoomshare.com
Demonstrate magnets in slings for attraction/repulsion. Prediction :   Make a prediction for this practical activity.
MAGNETIC MATERIALS  AND MAGNETS Distinguish between Magnetic materials and Magnets. A  magnet  is a  material or object  that produces a magnetic field and is able to attract or repel. All  magnetic materials  are affected by magnetism, but they do not repel like magnets. www.sciencetutors.zoomshare.com
PRACTICAL  ACTIVITY Demonstrate all magnetic materials attracted but only magnets repelled. Equipment Sample of magnet / non-magnetic materials in sets of 8-10.  8-10 magnets
REPU LSION  TEST FOR  MAG NETS OBJECTIVE To understand that  repulsion   is used to  test   whether or not an object is a  magnet.
LEVELS 5-7 HOMEWORK Draw a bar magnet showing north and south poles. Use your diagram to answer the following questions  Where is the magnetism strongest?  Put an X. Explain why magnetic effect or magnetism is strongest at point X as shown by your diagram. Draw a diagram showing the field lines around a bar magnet. What are magnetic field lines?
LEVELS 3-4 HOMEWORK Recognise that both magnets and the Earth have magnetic field lines. Draw a diagram showing the field lines around a bar magnet. What are magnetic field lines?

MAGNETS AND MAGNETIC MATERIALS

  • 1.
  • 2.
    MAGNETS OBJECTIVES To know that some materials are magnetic and others are non-magnetic. To know that like poles of a magnet repel while unlike poles of a magnet attract. S N N N S
  • 3.
    ALL ABOUT MAGNETS Look at the pile of rubbish. Your task is to list which bits (of rubbish) can be picked up with a magnet for recycling. www.sciencetutors.zoomshare.com www.sciencetutors.zoomshare.com
  • 4.
    ALL ABOUT MAGNETS Look at the pile of rubbish. Your task is to list bits (of rubbish) which cannot be picked up with a magnet for recycling. And explain why? www.sciencetutors.zoomshare.com www.sciencetutors.zoomshare.com
  • 5.
    MAGNETIC OR NON-MAGNETIC? LOOK AT LETTERS A-D and Discuss. A B D C
  • 6.
    POLES OF A MAGNET Suggest practical ways of verifying the Poles of a Magnet.
  • 7.
    REPULSION AND ATTRACTION Write a complete sentence using the following keywords: Attraction Repulsion Like poles Unlike poles S N S N N S N S TASK II TASK 1 Which of these bar magnets will attract each other and which pair will repel? And why? Copyright © Ivan @ Science tutors 2006 www.sciencetutors.zoomshare.com
  • 8.
    Demonstrate magnets inslings for attraction/repulsion. Prediction : Make a prediction for this practical activity.
  • 9.
    MAGNETIC MATERIALS AND MAGNETS Distinguish between Magnetic materials and Magnets. A magnet is a material or object that produces a magnetic field and is able to attract or repel. All magnetic materials are affected by magnetism, but they do not repel like magnets. www.sciencetutors.zoomshare.com
  • 10.
    PRACTICAL ACTIVITYDemonstrate all magnetic materials attracted but only magnets repelled. Equipment Sample of magnet / non-magnetic materials in sets of 8-10. 8-10 magnets
  • 11.
    REPU LSION TEST FOR MAG NETS OBJECTIVE To understand that repulsion is used to test whether or not an object is a magnet.
  • 12.
    LEVELS 5-7 HOMEWORKDraw a bar magnet showing north and south poles. Use your diagram to answer the following questions Where is the magnetism strongest? Put an X. Explain why magnetic effect or magnetism is strongest at point X as shown by your diagram. Draw a diagram showing the field lines around a bar magnet. What are magnetic field lines?
  • 13.
    LEVELS 3-4 HOMEWORKRecognise that both magnets and the Earth have magnetic field lines. Draw a diagram showing the field lines around a bar magnet. What are magnetic field lines?