Answer: The heat is transferred through a process of convection.
Step-by-step explanation:
There are 3 modes by which heat can be transferred:
1.) Conduction: In this process, heat is transferred whenever there is a direct contact between the two objects.
2.) Convection: In this process, heat is transferred whenever there is a movement of fluid particles (liquid or gas).
3.) Radiation: In this process, heat is transferred whenever there is a direct transfer of energy through the space. Like heat coming from the Sun to us on Earth.
In an oven, when the layer of air becomes hot, the density decreases and it rises up and the cool layer takes the initial position of hot air and through this process, convection currents are obtained.
Hence, the heat is transferred through a process of convection.