Slow and fast changes

SLOW AND FAST CHANGES

•    Some changes are very slow.

•    They may take hours, days, weeks or months to occur.

Or

•    Like: Milk sets into curd in three hours.

•    One revolution of earth around the sun takes one year.

•    A child grows into an adult in several years.

•    Some changes take place so fast that it is difficult to measure the time taken by them.

•    Bursting of balloon, breaking of glass.

•    Some changes take only a few seconds or a few minutes to occur. These all are called fast changes.