Question

non periodic change earthquake periodic change

Answer 1

Examples of periodic change are

1. Phases of moon.
2. Changing of day to night.
3. Revolution of Earth.

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Answer 2

some changes do not occur at fixed intervals of time and can occur and can occur at any time . such changes are known as non periodic change . Rusting of iron , lightening and thunder, earthquakes,r revolution of earth etc.. are examples of non periodic changes. The change is only on physical properties of the substance ..