1 / 25

Magnetism

Magnetism. Learning Objectives. At the end of the lesson, the students should be able to: Define a magnet State that a magnet has two poles State the properties of a magnet Observe the magnetic field pattern Around a magnet Between two like poles arranged end to end

abby
Download Presentation

Magnetism

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Magnetism

  2. Learning Objectives • At the end of the lesson, the students should be able to: • Define a magnet • State that a magnet has two poles • State the properties of a magnet • Observe the magnetic field pattern • Around a magnet • Between two like poles arranged end to end • Between two unlike poles arranged end to end • State and describe some applications of magnets in their everyday life

  3. Define a magnet • What is a magnet? • Have you ever seen a magnet before?

  4. Define a magnet Observe!

  5. Define a magnet • Do you know that a magnet has two poles? - North pole and South pole. • What is a pole? - The end of the magnet.

  6. Define a magnet • A magnet is a solid which attracts magnetic materials or objects and points north-south direction when suspended. • A magnet is a material that produces a magnetic field. • A magnet is a piece of material that attracts metal.

  7. DIFFERENT KINDS OF MAGNETS

  8. DIFFERENT KINDS OF MAGNETS BAR MAGNET

  9. Examples of magnets HORSESHOE MAGNETS

  10. Examples of magnets RING MAGNETS A ROD MAGNET

  11. PROPERTIES OF A MAGNET • A magnet exerts a magnetic force. • When a bar magnet is freely suspended, the bar magnet points to north-south direction.

  12. PROPERTIES OF A MAGNET Watch this video…

  13. PROPERTIES OF A MAGNET • Attractive property • A magnet attracts magnetic substances like iron, steel, nickel and cobalt. • Directive property • A freely suspended magnets always point to the north-south direction. • Poles exist in pairs • A magnet contains two poles i.e. North pole and South pole • Magnetic property is maximum at its poles.

  14. LAWS OF MAGNETISM Pay attention… And listen what the man has to say…

  15. LAWS OF MAGNETISM • Like poles repel each other. • Unlike poles attract each other.

  16. MAGNETIC FIELDS Observe this video and take note of the lines of forces. Reminder: The lines of the magnetic field is called the lines of forces.

  17. APPLICATIONS OF MAGNETS Activity • In groups of four or five, give a list of uses of magnets in your everyday life. • You are given 3 minutes for discussion. • Then choose a leader from your group to state one use of the magnet and explain its importance to your everyday life.

  18. APPLICATIONS OF MAGNETS Household applications & Entertainment Magnets in loudspeakers Refrigerator magnets

  19. APPLICATIONS OF MAGNETS Transportation Maglev trains Car alternator

  20. APPLICATIONS OF MAGNETS Medicinal purposes – MRI (Magnetic Resonance Imaging)

  21. APPLICATIONS OF MAGNETS Others Electric motor Door Stopper

  22. SUMMARY OF THE LESSON • A magnet is a solid which attracts magnetic materials or objects and points north-south direction when suspended. • A magnet has two poles – North pole & South pole. • The properties of a magnet are • Attractive property • Directive property • Poles exist in pairs

  23. SUMMARY OF THE LESSON • Laws of magnetism states that:- • Like poles repel each other • Unlike poles attract each other

  24. Learning Objectives • At the end of the lesson, the students should be able to: • Define a magnet • State that a magnet has two poles • State the properties of a magnet • Observe the magnetic field pattern • Around a magnet • Between two like poles arranged end to end • Between two unlike poles arranged end to end

  25. THE END

More Related