Question

I. Fill in the blanks.
1. Natural magnets are made from __________.
2. Unlike poles of a magnet __________ each other.
3. Nickel is an example of ___________ substance.
4. Magnets were discovered by __________ of Magnesia.
5. All magnets have ___________ poles.
II. State whether the following statements are TRUE or FALSE.
1. Magnetite contains iron.
2. U-shaped magnets have only one pole.
3. Magnets are used in CD’s and DVD’s.
4. Magnet loses its property when heated to very high temperature.
5. A freely suspended magnet always comes to rest in east-west direction.
III. Short answer questions.
1. Define: a) Magnetic field.
b) Magnetic compass.
2. Distinguish between: a) Natural and artificial magnets.
b) Magnetic and non-magnetic substances.
3. Give reason:
a) More iron filings will stick to the ends of the magnet than to the middle.
b) Magnets should never be kept near electronic items.

Answer 1

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Hey mate.........

Here's your answer........

The word scientist is a general term, used to describe someone who researches and examines various aspects of the physical world in order to attain a better understanding of how things work and function. There are many specializations of 'scientist', and depending on which field of study one chooses to follow, the work can vary greatly. Each scientist, however, follows 'the scientific method', which is a strict set of rules that ensure all new discoveries are factual and not just speculation.

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