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Understanding Rates and Magnetism: Key Concepts and Examples

In this lesson, we explore the concept of "rates" and how they apply to various scenarios we've learned so far. Additionally, we prepare for our upcoming test on magnetism, focusing on how moving charges create magnetic fields, as demonstrated by Hans Christian Oersted. We'll discuss electromagnetic induction, the nature of magnetic fields, and the essential magnetic elements: iron, nickel, and cobalt. Be ready to connect the dots between electric fields and magnetic fields, and understand how they interact to produce electrical current.

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Understanding Rates and Magnetism: Key Concepts and Examples

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Presentation Transcript

  1. Phew Quaw • Explain what a “rate” is and give some examples that we have learned so far.

  2. Monday • Test Corrections • Thursday – Test on Magnetism!

  3. The Earth’s Shield 4.3.1 Magnetic Fields and Electromagnetic Induction

  4. What do we know? • Hans Christian Oersted showed that moving charges create a magnetic field.

  5. Electromagnetic Induction • All charges produce ELECTRIC FIELDS • Moving charges produce MAGNETIC FIELDS • PERPENDICULAR to the motion of the charge Magnetic field lines

  6. Making a Magnet • Magnetism is a FIELD FORCE • No contact required • All atoms have “some” natural of magnetism • Three strongly magnetic elements • IRON, NICKEL, COBALT

  7. Electromagnetic Induction • Magnets produce magnetic fields • Moving magnets produce ELECTRIC FIELDS • PERPENDICULAR to motion of the magnet • This causes ELECTRICAL CURRENTto flow

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