Properties of magnets

Back to: PRIMARY SEVEN P7 SCIENCE TOPICAL QUESTIONS AND ANSWERS

Properties of magnets
Qn. Identify the different properties of magnets.
a) A freely suspended bar magnet will always rest with its poles facing in the north-south direction.
An illustration

Qn. What is a magnetic field?

• A magnetic field is an area around a magnet where forces of magnetism act.
  c) Unlike poles of a magnet attract each other.

Qn. What is a neutral Point?

• A neutral point is a point where magnetic force due to two magnets is zero.
  e) Magnetism is strongest at the poles.

f) When a bar magnet is broken, each piece becomes an independent magnet.
Illustration

h) Magnets become weaker with age.
Note:

• This can be prevented by keeping magnets in iron keepers.
  Qn. State why magnets are kept in iron keepers.
• To prevent magnets from losing their magnetism.
  An illustration showing magnets in iron keepers