REVISION ASSIGNMENT FOR IV UNIT TEST

FOOD AND MAGNETS
Q1) Differentiate between the following terms:
a)Natural magnets and artificial magnets.
b)Permanent magnets and temporary magnets.
c)Magnetic and non magnetic materials.
Q2) Name the factors on the basis of which the strength of a magnet depends upon.
Q3) With the help of an activity, explain the interaction between the two magnets.
Q4) Enlist the various properties of a magnet.
Q5) Justify the statement ‘Earth behaves as a magnet’.
Q6) What are the various ways by which you can make a magnet?
Q7) Explain the following terms:
a) Magnetic Keepars b) Magnetic compass
Q8) Name the various vitamins, their functions and the deficiency diseases caused by them.
Q9) Name the various minerals , their functions and sources.
Q10) What is obesity? Give the various reasons responsible for it.
Q11) Give full form of PEM. Name the two disorders of PEM.Also give symptoms
of each one of them.
Q12) How does proteins affect our health?Explain.