Give a reason why change of seasons is a periodic change while the change of weather is a non-periodic change.

Periodic changes are changes that occur at regular intervals. Non-periodic changes are changes that take place at irregular intervals. Change of seasons is periodic because it changes in a particular interval of time that is particular number of months. [1 mark] Change of weather is sudden and not regular, that's why it is a non-periodic change. Weather can change suddenly it may rain in the evening. [1 mark]