Q4 of 7 Page 51

A drawing sheet changes when you draw a picture on it. Can you reverse this change?

If the picture is drawn with colours, the change cannot be reversed while if it is drawn with a pencil, it can be erased and hence can be reversed.


More from this chapter

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2

You accidentally dropped your favourite toy and broke it. This is a change you did not want. Can this change be reversed?

 3

Some changes are listed in the following table. For each change, write in the blank column whether the change can be reversed or not.

 5

Give few examples to explain the difference between changes that can or cannot be reversed.

 6

A thick coating of a paste of Plaster of Paris (POP) is applied over the bandage on a fractured bone. It becomes hard on drying to keep the fractured bone immobilized. Can the change in POP be reversed?