L-13 Magical Magnets – Extra questions

Q1. What do you mean by magnetism?

Q2. Write a short note on Magnetite?

Q3. Will magnets lose their power overtime? Give reason.

Q4. Identify the property of magnet shown in the given pictures

Q5. Give reason

a)      Earth is considered as huge magnet.

b)      Magnetic keepers are placed across the poles of a magnet.

Q6. How do we find the direction of a place using magnetic compass?

Q7. How will you make your own Magnet?

Q8. Explain use of magnet in field of medicines.

Q9. List 10 uses of magnet in our daily life.

Q10. Fill in the blanks-

a)      ______ is an alloy of aluminium, nickel and cobalt, used to make powerful ______.

b)      Materials that are not attracted by magnets are called as __________ materials.

c)      _________ Magnets are of different shapes like rectangular, cylindrical, U-shaped or horse shoe shaped.

d)      The word magnet originates from Greek word _______________.

e)      _________  ___________ are used to run high-speed Maglev trains.