EM: Magnetic Field LINES

Forces and Motion 9.1
Lesson 17. 
Magnetic Field Lines
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PhysicsSecondary EducationAge 13

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Forces and Motion 9.1
Lesson 17. 
Magnetic Field Lines

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How are you today?
😒🙁😐🙂😃

Slide 2 - Sondage

Highlights of the Day
  • describe a magnetic field, and explain that it surrounds a magnet and exerts a force on other magnetic fields
  • Values :  Responsibility and Determination

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Recall

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Magnetic Fields
  • A magnetic field is the area around a magnet where the effects of the magnet can be detected.

     EFFECTS:     Attraction or Repulsion

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Strongest
Strongest

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Strongest

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Strongest
The magnetic field is strongest where the lines are closest together.

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Rules: Magnetic Field Lines
  • join opposite poles
  • have arrows that point N     S
  • must not touch each other
  • must not cross each other

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If one magnet is stronger than another, the magnetic field of the stronger magnet will be different in two ways.
  •  All the field lines will be closer together.
  • The field lines will extend further away from the magnet.

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S
N
Apply the Rules: Magnetic Field Lines

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Magnetic fields interacting
  • Two north poles repel.
  • Two south poles repel.
  • A north and a south pole attract.

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S
N
S
N

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S
N
N
S

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N
S
S
N

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Self-survey: Rate your level of understanding and participation in this lesson.
15

Slide 21 - Sondage