Question

a student obtains two cubes, one large and one small, that are made of steel. the student measures the temperatures of the cubes and finds that the large cube is at 80°c, and the smaller cube is at 40°c. the student places the smaller cube on top of the larger cube, as shown. after several minutes, the student notices that both cubes are the same temperature. what does the student demonstrate using the model? convection is the transfer of heat that always happens in an upward direction. convection is the transfer of heat between objects that are in contact. conduction is the transfer of heat from a hotter object to a colder object. conduction is the transfer of heat from a larger object to a smaller object.

Explanation:

Convection involves heat transfer through fluid movement, not applicable here as it's solid - to - solid contact. Conduction is the transfer of heat between objects in contact from a hotter to a colder one. The cubes are in contact and heat is transferred from the hotter (80°C) to the colder (40°C) cube.

Answer:

Conduction is the transfer of heat from a hotter object to a colder object.