Question

Why is heat transfer by convection possible only in liquids and gases? How are land breeze and sea breeze produced?

Answer 1

1. Convection is a type of heat transfer that can only happen in liquids and gases because it involves those liquids or gases physically moving.
2. Convection happens when there is a difference in temperature between two parts of a liquid or gas.
3. The sea heats up slower than the land because it has a much higher heat capacity. Thus, the temperature over the land surface increases, in turn, heating up the surrounding air.
4. Due to the difference in pressure and the air flows from the high pressure over the sea to the low pressure over the land. This flow of air from the sea to the land is termed as the sea breeze.
5. As the heat capacity of the land is different from the sea it cools down quicker. Thus, a low-pressure situation develops over the sea as the temperature above it is higher when compared to the land. Due to this, the air flows from the land to the sea which is termed the land breeze.
   .