Question

1. it is 60°f inside petes house. the outside temperature is 40°f. pete turns on the central heat in the house to keep it warm. the heat is transferred throughout the house using .

Explanation:

The problem is about heat transfer in a house, which falls under Physics (a subfield of Natural Science). Central heating systems typically transfer heat through convection (movement of heated air) or conduction and radiation as well, but in the context of distributing heat throughout the house, convection (or a combination, but the main method for air - based heating systems is convection) is key. However, the question is asking for the method of heat transfer used by central heat to warm the house. Common methods of heat transfer are conduction, convection, and radiation. Central heating systems (like forced - air systems) use convection: the heated air from the furnace is blown (convected) through the ducts to different parts of the house.

Answer:

Convection (or a more detailed answer could be "Convection (as central heating systems, especially forced - air systems, transfer heat by moving heated air through ducts, which is convection)")