Question

Morris is baking a pan of brownies to take to school. Which of the following best describes what types of thermal energy transfer are responsible for transferring heat from the oven to the brownies?
A.

convection and radiation

B.

conduction and nuclear

C.

convection and nuclear

D.

conduction and radiation

Answer 1

A. convection and radiation

Explanation: The oven transfers heat to the brownies mainly by hot air moving around them (convection) and by infrared radiation from the heating elements and oven walls. Conduction also occurs (from the pan into the batter), but the primary mechanisms from the oven itself are convection and radiation.