EM: Electromagnets

Magnetism 9.3
Electromagnets
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Slide 1: Tekstslide
PhysicsSecondary EducationAge 13

In deze les zitten 25 slides, met interactieve quizzen, tekstslides en 1 video.

Onderdelen in deze les

Magnetism 9.3
Electromagnets

Slide 1 - Tekstslide

How are you today?
😒🙁😐🙂😃

Slide 2 - Poll

Highlights of the Day
  • describe how to make an electromagnet and know that electromagnets have many applications
  • Values :  Responsibility and Determination

Slide 3 - Tekstslide

Basic Concepts and Ideas

Slide 4 - Tekstslide

A material is described as _____________ if it is attracted to a magnet.
A
electric
B
magnetic
C
repulsive

Slide 5 - Quizvraag

Magnetic materials include the metals i_____, n_______ and c________.

Slide 6 - Open vraag

Iron

Slide 7 - Tekstslide

Nickel

Slide 8 - Tekstslide

Cobalt

Slide 9 - Tekstslide

S_____ is another common magnetic metal. It is a mixture that contains a large proportion of iron.

Slide 10 - Open vraag

Steel

Slide 11 - Tekstslide

Magnetic materials can be ___________. It means turned into a magnet.
A
magnetised
B
brushed
C
cut

Slide 12 - Quizvraag

__________ magnets have a magnetic field that is always there. You cannot switch the magnetic field off and on again.
A
Permanent
B
Artificial

Slide 13 - Quizvraag

One way to magnetise a magnetic material is by using "electricity". When this method is used, the magnet is called an ________________.
A
ferromagnet
B
electromagnetic

Slide 14 - Quizvraag

Electromagnets

Slide 15 - Tekstslide

Slide 16 - Video

Give ONE application of electromagnets in daily life.

Slide 17 - Open vraag

Slide 18 - Tekstslide

Slide 19 - Tekstslide

Electromagnets
  • An electromagnet is made by wrapping a wire around a magnetic material, such as iron. The wire that is wrapped around is a called a coil. The material in the middle of the coil is called the core.

Slide 20 - Tekstslide

Slide 21 - Tekstslide

Poles of an electromagnet
You can find out which pole is which in two simple ways.
  • Use a magnetic compass. A magnetic compass points along magnetic field lines, so will point towards the south pole.
  • Use a bar magnet with known poles. Opposite poles attract and like poles repel so, by bringing the bar magnet close to the electromagnet, you can detect which pole is which.

Slide 22 - Tekstslide

Give one way how you can find out which pole is in an electromagnet.

Slide 23 - Open vraag

Slide 24 - Tekstslide

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

Slide 25 - Poll