Magnetism

Same poles of two magnets

• Repel each other

• Attract each other

• Have no effect to each other

• Depends on the orientation if they attract or repel each other

Where is the magnetic force the strongest

• At the center of the magnet

• Near the poles

• Depends on the orientation of the magnet

• Everywhere the same

If I increase the distance of two magnets from 2cm to 4cm what happens to the force between them?

• Doubles

• Reduces to half

• Increases by 4 times

• Reduces by 4 times

How can I speed up the process of magnetizing a metal

• By hammering the metal

• By placing AC current round it in a coil

• By heating it

• By placing it at write angles with the magnetic force

The Magnetic North Pole

• stays at the same place

• wanders at 25km per year

• Is located at the center of North Canada

• Is not at the same position with True North

According to this METAR

• 140 is degrees Magnetic

• 140 is degrees True

• 010 is degrees Magnetic

• 010 is degrees True

When my compass shows the magnetic North to the left of the True North the variation is

• West

• East

• Zero

• More that 180 degrees

On this variation map the green line is called

• Isocline

• Isogonal

• Agonic

• Aclinic

On this variation map the blue and red lines are called

• Isogonal

• Aclinic

• Agonic

• Isoclines

On this magnetic dip map the green line is called

• Isocline

• Magnetic Equator

• Isocline Equator

• Isogonal