Page 2 - 3-Lesson Notes-What is change, Types of change

TYPES OF CHANGES:

1. Natural Change: The changes which are brought about by nature or take place on their
own.

E.g., Change of Seasons, Rainfall, and Turning day into night, Earthquakes, etc.

2. Man-made Change: The changes which are brought about by man or changes
controlled by man. E.g., cooking food, burning of fuel, cutting paper, etc.

3. Slow Change: The changes which take place in a long period of time.

E.g., rusting of iron, the occurrence of day and night, the ripening of fruits, growing of trees,
etc.

4. Fast Change: The changes which take place in a short period of time.
E.g., burning of paper, stretching of a rubber band, blowing of balloons, bursting of crackers.

5. Periodic Change: The changes which repeat themselves after regular intervals of time.
E.g., Formations of day and night, the motion of the swing, movement of a pendulum, etc.

6. Non-periodic Change: The changes which do not repeat themselves regularly.

E.g., Natural disasters like volcanic eruptions, floods, and earthquakes.
7. Desirable Change: The changes which are useful to us and we want them to take

place.
E.g., growing of plants, cooking of food, germination of seeds, etc.

8. Undesirable Change: The changes which are harmful to us and we don’t want them
to take place. E.g., accidents, disasters, spoilage of food, etc.

9. Reversible Change: The changes that can be easily reversed by removing the cause

of the change. E.g., melting of ice, stretching of a rubber band, drying of clothes, etc.
10. Irreversible Change: The changes that cannot be easily reversed.

E.g., burning of matchstick, ripening of fruits, bursting of crackers.

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