Convection in daily life: (i) Hot air balloons: Air molecules at the bottom of the balloon get heated by a heat source and rise. As the warm air rises, cold air is pushed downward and it is also heated. When the hot air is trapped inside the balloon, it rises.
(ii) Breeze During day time, the air in contact with the land becomes hot and rises. Now the cool air over the surface of the sea replaces it. It is called sea breeze. During night time, air above the sea is warmer. As the warmer air over the surface of the sea rises, cooler air above the land moves towards the sea . It is called land breeze.
(iii)Winds: Air flows from area of high pressure to area of low pressure. The warm air molecules over hot surface the and create low pressure. Do, cooler air with high pressure flows towards low pressure area. This causes wind flow
(iv) Chimneys: Tall chimneys are kept in kitchen and industrial furnaces. As the but gases and smoke are lighter, they rise up in the atmosphere.
