Question

We blow to cool hot things as well as towarm them. Give examples of each.

Answer 1

We blow to warm things in winter or cold days because our body temperature is much warmer than outside one. example , while walking outside in cold days we blow over our hand and rub them.
We blow to cool hot items , because by this we are helping the water droplets to evaporate by using the heat of that item and leaving behind a much cool item.
example , we blow to cool hot tea or soup .