During an adiabatic process heat is:
An ADIABATIC PROCESS is defined as a process in which no heat transfer takes place. This does not mean that the temperature is constant, but rather that no heat is transferred into or out from the system. The parcel temperature changes due to an expansion or compression - no heat is added or taken away from the parcel.
- In the atmosphere pressure decreases as altitude increases so if an air parcel is forced to rise it will expand as it rises and hence will cool by the adiabatic process.
- Similarly, if a parcel of air is forced to descend it will become compressed and hence heat up, again by the adiabatic process.
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