Respuesta :
The second one since convection is the process by which heat is transferred from a solid surface to a non solid
A workman has a cup containing a hot drink as part of his meal. In order to keep the drink hot whilst he eats the rest of his meal, he covers the cup, because of the evaporation from the surface of the liquid.
What is evaporation?
Evaporation occurs in the liquid when the surface of the liquid is open to the surrounding environment. When evaporation occurs, the liquid releases the vapors into the surrounding, which leads to liquid cooling faster than liquid kept in a closed container.
- When a hot liquid is placed in a non-insulated environment, it is subjected to a process of heat transfer.
- As a result, the molecules in the state of liquid get converted into a gaseous state, by evaporation.
- The higher the temperature of the surrounding, the faster the cooling rate.
- The evaporation does not stop until the liquid is brought back to room temperature.
- Hot water has energized atoms that are at an excited state, whereas in the process of reducing temperature the excited atoms get back to their ground state.
To learn more about evaporation, refer to:
https://brainly.com/question/5019199
#SPJ2
