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प्रश्न
Change is the law of nature and occurs in our everyday life, at all times and in all places.
Differentiate between the following change with a suitable example.
Periodic and non-periodic change
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उत्तर
| Periodic change | Non-periodic change |
| (i) Changes which occur periodically (occur again and again) at regular intervals of time. | (i) Changes which do not occur periodically (do not repeat) at regular intervals of time. |
| (ii) Examples of a periodic change: Change of seasons, the occurrence of day and night, movement of a clock pendulum. |
(ii) Examples of a non-periodic change: Change of weather, growth of a plant, cyclones, earth-quakes, rusting of iron, thunder, and lightning. |
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Passing of electric current through water, and water breaking down into hydrogen and oxygen gases.
Fill in the blank.
A new substance is formed in a ............... change.
State whether the following is physical or chemical changes.
cutting wood into small pieces —
Sublimation is classified as a physical change. Why ?
State the various conditions that favour the process of evaporation.
Classify the following as a physical or a chemical change.
Butter getting rancid
Classify the Following as a Physical Or a Chemical change.
Glowing of an Electric Bulb
Filling up a balloon with hot air is a _______ change.
State whether the following statement is true or false:
Anaerobic bacteria digest animal waste and produce biogas.
Explain the characteristics of physical change with examples.
