What is a magnetic field ks3?

A magnet creates a magnetic field around it. You cannot see a magnetic field, but you can observe its effects. A force is exerted on a magnetic material brought into a magnetic field. The force is a non-contact force because the magnet and the material do not have to touch each other.

What is a magnetic field grade 7?

Magnetism is the force that pulls (attracts) or pushes (repels) an object which contains metal towards, or away from, a magnet. A magnet has an area around it over which it can exert a force on objects. The further away the object is from the magnet, the weaker the force. This area is called the magnetic field.

What is the earth’s magnetic field ks3?

The Earth behaves as if it contains a giant magnet. It produces a magnetic field in which the field lines are most concentrated at the poles. This magnetic field can be detected using magnetic materials or magnets.

What is a magnetic field BBC Bitesize?

A magnetic field is the region around a magnet where a force acts on another magnet or on a magnetic material.

How do you describe a magnetic field?

Magnetic Field is the region around a magnetic material or a moving electric charge within which the force of magnetism acts. A magnetic field is a vector field in the neighbourhood of a magnet, electric current, or changing electric field in which magnetic forces are observable.

What is a magnetic field for dummies?

The magnetic field is the area around a magnet in which there is magnetic force. Moving electric charges can make magnetic fields. Magnetic fields can be illustrated by magnetic flux lines. At all times the direction of the magnetic field is shown by the direction of the magnetic flux lines.

What are magnetic fields ks2?

The magnetic field is the area surrounding a magnet where the force is acting on another magnet or magnetic material. It can be observed using a compass placed at different points around a bar magnet.

What is a magnetic field in simple terms?

The definition of a magnetic field is a place in space near a magnet or an electric current where a physical field is created from a moving electric charge that creates force on another moving electric charge. An example of a magnetic field is the Earth’s magnetic field.

What causes the Earth’s magnetic field ks3?

The outer core of the Earth contains a lot of iron in a molten state. As the Earth spins this molten iron moves and creates the Earth’s magnetic field .

What 3 features of a magnetic field do field lines show?

The diagram shows these key features:

  • the magnetic field lines never cross each other.
  • the closer the lines, the stronger the magnetic field.
  • the lines have arrowheads to show the direction of the force exerted by a magnetic north pole.
  • the arrowheads point from the north pole of the magnet to its south pole.