EM: Magnetic Field LINES

Forces and Motion 9.1
Magnetic Field Lines
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Slide 1: Slide
PhysicsSecondary EducationAge 13

This lesson contains 28 slides, with interactive quizzes, text slides and 2 videos.

Items in this lesson

Forces and Motion 9.1
Magnetic Field Lines

Slide 1 - Slide

How are you today?
😒🙁😐🙂😃

Slide 2 - Poll

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

Slide 3 - Slide

Recall

Slide 4 - Slide

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

     EFFECTS:     Attraction or Repulsion

Slide 5 - Slide

Strongest
Strongest

Slide 6 - Slide

Slide 7 - Slide

Strongest

Slide 8 - Slide

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

Slide 9 - Slide

Slide 10 - Slide

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

Slide 11 - Slide

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.

Slide 12 - Slide

S
N
Apply the Rules: Magnetic Field Lines

Slide 13 - Slide

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

Slide 14 - Slide

Slide 15 - Slide

S
N
S
N

Slide 16 - Slide

Slide 17 - Slide

S
N
N
S

Slide 18 - Slide

Slide 19 - Slide

N
S
S
N

Slide 20 - Slide

Forces and Motion 9.2
The Earth as a Magnet

Slide 21 - Slide

Highlights of the Day
  • explain that the reason the Earth has a magnetic field is that the core acts as a magnet
  • Values :  Responsibility and Determination

Slide 22 - Slide

The Earth's Magnetosphers

Slide 23 - Slide

Slide 24 - Video

Slide 25 - Video

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

Slide 26 - Slide

Slide 27 - Slide

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

Slide 28 - Poll