Be a Super Searcher and see if you can find the answers to these ten questions in the section about magnets.
a: Print out the following sheets.
b: Write your answers in the spaces provided.
c: When you have finished pass the sheet to your teacher.
The first magnets were known as:
m_______________________ or l_______________________
Sailors used l_______________________ to help them navigate. They had found that when a piece of m_______________________was suspended from a thread it came to rest in a N_______________________-S_______________________ direction.
Magnetism is concentrated in the p_______________________ of a magnet.
The Law of the Magnet is:
Like poles _______________________
Unlike poles _______________________
The area round the magnet in which magnetic materials are attracted by the magnet is called the _______________________ _______________________.
Magnets are usually made of:
I_______________________ or S_______________________
Materials can be p_______________________ magnets or
materials can be i_______________________ magnets.
In an unmagnetised piece of iron or steel the m_______________________ are arranged at random with the poles pointing in lots of different directions.
The M_______________________ Theory of M_______________________ suggests that in a magnet all the m_______________________ are lined up with their own North-seeking poles all pointing in the same direction and with all the South-seeking poles pointing in the opposite direction.
A steel bar can be made into a magnet or a steel magnet can be demagnetized by
h_______________________ or h_______________________