Learning Objectives:• What are force fields?• Describe field patterns of:

- Bar magnets - Straight wires- Plane coils- Solenoids

What are Force Fields?

There must be some sort of

force field around the black

box that attracts the magnet

When the box is cold it

is attracted by the

magnet, but when it is

warm it is not

attractedEverybody knows that force

fields are Science Fiction and

that only Superheroes can

create them!

Click here for a more detailed explanation of this effect!

In Sci-fi films and cartoons many Superheroes have the ability to generate powerful force fields that can protect them from the enemy’s attacks.

But are force fields real? And what are they?

Sound by Calamarius

What are Force Fields?

Anti-Gravity Fields

Gravitational Forces

Magnetic Forces

Electric Forces

Electromagnetic Forces

Telepathic Forces

Bulletproof Fields

What are Force Fields?

The Earth’s magnetic field protects us from cosmic rays

What are Force Fields?

Follow the instructions your teacher will give you and draw the pattern observed in these three situations.

Bar magnets field patterns

N

S N

S

N

S

N

S

S

N

Show field Show field Show field

Some magnetic fields are naturally occurring, like in Magnetite, others can be induced by a current.

Wires, coils and solenoids

Courtesy of Rob Lavinsky

Wires, coils and solenoids

• Magnetic fields are a type of force field• The field patterns of:

Bar Magnets

Wires

Plain Coils

Solenoids

Learning outcomes

Your task is to draw a mind map with “Magnetic Fields” as the central topic. Use the following rules:

- Use many colours for branches and text- Use one word only on each branch- Use as many images as possible- Link different concepts together with arrows to help

you give meaning to and create connections in your work

Watch the video in the next slide to see some guidelines on effective mind mapping

Homework

Homework