(a) What are slow and fast changes? Give one example of each.
(b) Can change of day and night be considered a fast change? Explain.
(a) The changes which take place in a long period of time are called slow changes. For example: rusting of iron.
The changes which take place in a short period of time are called fast changes. For example: bursting of crackers.
(b) Change of day and night cannot be considered a fast change since it doesn’t occur in a small span of time. It is a slow change.