Which of the following is not a method of heat transfer on earth
The correct answer is d) Convection in space.
Explanation: The three primary methods of heat transfer on Earth are conduction, convection, and radiation.
- Conduction is the transfer of heat through direct contact between materials or substances. For example, when a metal spoon is placed in hot soup, the heat is transferred from the hot soup to the cooler spoon through conduction.
- Convection is the transfer of heat through the movement of fluid or air. For instance, when heated air rises and cool air descends, it creates a convection current, transferring heat in the process. This is how heat is circulated in the atmosphere and oceans, leading to weather patterns and ocean currents.
- Radiation is the transfer of heat through electromagnetic waves. The Sun's radiant heat reaches the Earth through the process of radiation.
However, convection in space is not a method of heat transfer on Earth. Space is a vacuum devoid of matter, and therefore, there is no medium to facilitate the movement of heat through convection.