Unit 4.1 Forces

magnetic field

magnetic declination

magnetic fan lines

magnetic tan lines

Repel

Attract

Weaker

Stronger

Stay the same

There is a north and south pole on a magnet.

Fields can exert non-contact forces.

Magnetic fields do not exist.

Moving

Non-moving

Positive, Positive

Positive, Negative

Negative, Positive

Negative, Negative

Like charges repel each other

Like charges attract each other

Like poles attract each other

Conductor

Insulator

Magnet

Circuit

High

Low

Magnetism

Gravity

Moving Electrons

Lightning

A

B

C

I

II

III

IV

Gravitational Force

Electric Force

Magnetic Force

Electromotive Force

A

B

C

Increasing the number of coils in the wire

Decreasing the number of coils in the wire

Decreasing the electric current

Decreasing the voltage

The more coils an electromagntic has, the stronger the magnetic field

The more coils an electromagntic has, the weaker the magnetic field

The larger the metal object, the stronger the magnetic field is

There is no relationship between number of coils and the strength of a magnetic field

magnetism and thermal 

electricity and thermal 

electricity and magnetism 

magnetism and radiant 

chemical; mechanical

mechanical; electrical

electrical; mechanical

potential; kinetic

Motor

Generator

magnets can be turned on/off

you can turn an electromagnet on/off

magnets are more powerful

magnets have a North and South pole

chemical to mechanical

electrical to mechanical

mechanical to electrical

physical to potential

Mechanical

Electrical

Thermal

Potential