magnetic fields

• What is the direction of the magnetic field?

  From North to South
• what happens to the strength of a magnetic field the further away you are from the magnet

  it becomes weaker
• Draw the magnetic field lines produced around a bar magnet

  
• Draw the magnetic field lines produced when two opposite poles are bought together

  
• Draw the magnetic field lines produced when two like poles are bought together

  
• What affects the strength of the magnetic field around a wire?

  the current through the wire and the distance from the wire
• the magnetic field is

  The region around a magnet where a force acts on another magnet or on a magnetic material (iron, steel, cobalt and nickel)
• The force between a magnet and a magnetic material is always one of attraction
• The direction of the magnetic field at any point is given by the direction of the force that would act on another north pole placed at that point.
• A magnetic compass contains

  a small bar magnet
• The Earth has

  a magnetic field.
• The compass needle points in the direction of

  the Earth’s magnetic field.