Magnetism

Question 1

what is a magnetic field

Answer 1

region where other magnets / magnetic materials experience a force

Question 2

where do magnetic fields go and what do they show

Answer 2

north to south

if closer together, stronger magnetic field

Question 3

where is magnetic field strongest and what does it show

Answer 3

at poles meaning magnetic forces are also strongest at poles

Question 4

what is a permanent magnet

Answer 4

A permanent magnet that will produce its own magnetic field

Question 5

what induced magnet

Answer 5

When a magnetic material is placed in a magnetic field, the material can temporarily be turned into a magnet.

Question 6

what does magnetic induction explain

Answer 6

that forces between magnets and a magnetic material is always attractive as the south pole of the magnet induces the north pole of material

Question 7

what does the quickness of losing magnetism depend on

Answer 7

the softness of hardness of material

Question 8

what does the quickness of losing magnetism depend onho

Answer 8

the softness of hardness of material

Question 9

how can you test if the material is a magnetic material

Answer 9

if it attracts or or if it repulse it is a magnet

Question 10

what are the magnetic material

Answer 10

nickel / cobalt / iron and compounds or alloys if they contain some magnetic material

Question 11

what is the plotting compass technique

Answer 11

• Place the magnet on top of a piece of paper
• Draw a dot at one end of the magnet
• Place a plotting compass next to the dot, so that one end of the needle of the compass points away from the dot
• Use a pencil to draw a new dot at the other side of the compass needle
• Move the compass so that it points away from the new dot, and repeat the process above
• Keep repeating the previous process until there is a chain of dots going from one end of the magnet to the other
• Then remove the compass, and link the dots using a smooth curve – this will be the magnetic field line
• Repeat the whole process several times to create several other magnetic field lines

Question 12

what is uniform magnetism

Answer 12

same strength and direction at all points
To show that the magnetic field has the same strength at all points there must be equal spacing between all magnetic field lines