Heat is a form of energy. It is the total energy of a system associated to the the movement of its molecules or molecular motion.
It depends on various factors like enthalpy of the system, its pressure, temperature, etc.
In the case mentioned, the pace at which meat is cooked on a barbecue grill depends on the water content of the meat and the barbecue grill temperature.
The reason for the cooking speed being affected by amount of water in the is that meat heat energy required to remove the excess water for the proper cooking depends on the water content which if removed completely will result in uncooked meat.
The more the water content the more is the energy requirement to remove it.
Water has a very high specific heat capacity of about 4.186 J/C. This means that the more water that a piece of meat holds, the longer is takes to cook since the water requires more energy to remove from the meat.
The speed of cooking also depends on factors such as the thickness of the meat and the temperature of the grill. The thicker a piece of meat is, the longer it takes for the entire piece of meat to heat completely through. The higher the temperature of the grill, the quicker the heat energy spread throughout the meat.
What is the difference between the crust and lithosphere? The crust (whether continental or oceanic) is the thin layer of distinctive chemical composition overlying the ultramafic upper mantle. ... The lithosphere is the rigid outer layer of the Earth required by plate tectonic theory.
