Question

1. Change is the law of nature and occur in our everyday life, at all times & in all places.
Differentiate between the following changes with a suitable example.
a] Desirable & undesirable change
b] Periodic & non-periodic change
c] Slow & fast change
d] Natural & man-made change
e] Reversible & irreversible change​

Answer 1

Answer:

Desirable changes : Those changes that are desired to occur that is ,we want then to take place.

e.g Gernination of seeds, Ripening of fruit.

Undesirable changes : Those changes which we do not want them to take place.

e.g Rusting of Iron

Periodic changes: These are those changes which occur after a regular interval of time .

e.g Day and Night, Beating of heart

Non-periodic Changes : These are those changes which do not occur at a regular interval of time .

e.g Occitence of Earth quake,Sneezing

Slow Change : The change happening over a long period of time .

e.g Rusting of Iron

Fast change : The changes that occur in a short time.

e.g Burning of paper

Natural Change : Those changes which occurs naturally and man plays no part in these changes.

e.g ,Seasonal change ,Day and night formation

Man made changes: Ghise changes that occurs due to man and man plays role in it.

e.g Burning of fuels and chemical reaction.

Reversible change : Those changes which happens physically and can be reversed .

e.g conversion of Ice to water.

Irreversible change : These are those changes that occurs chemically and cannot be reversed.

e.g Baked Cake

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