Conduction, convection and radiation Ko Apne parivesh ke udaahran
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Answer:
●conduction is the process of passing of heat through direct contact of molecules.
●convection is the process of passing of heat through the movement of liquid or gas
●radiation is the process of passing heat through thermal radiation.
CONDUCTION ---The definition of conduction is the movement of something such as heat or electricity through a medium or passage. An example of conduction is using a metal rod to roast marshmallows on an open fire and feeling the heat rise through the rod from the fire to your hand.
CONVECTION ---Sea breeze: This phenomenon occurs during the day. The sun heats up both the sea surface and land. As the sea has a greater heating capacity, it absorbs much of the sun’s energy but gets warmed up much slower than the land. As a result, the temperature above the land rises and heats the air in the atmosphere above it. Warm air is less dense, and hence, it expands, creating a low-pressure area over the land near the coast. Meanwhile, there is relatively high pressure over the sea. The difference in air pressure causes the air to flow from sea to land. The sudden gush of wind felt due to this is known as the sea breeze.
Land Breeze: This phenomenon occurs during the night when the situation reverses. As the sun sets, the land and sea start cooling down. The land quickly loses heat when compared to water due to the differences in heat capacity. Consequently, the temperature of the sea is relatively higher, which creates low air pressure there. This sets up a flow of cool breeze offshore, known as the land breeze.
RADIATION---
A burning candle emits radiation in the form of heat and light. The Sun emits radiation in the form of light, heat, and particles.
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