Question

question 7
1 pts
convection
conduction
radiation

Explanation:

Convection involves the transfer of heat through the movement of fluids (liquids or gases). A ceiling fan creates air currents. As the fan blades rotate, they push air down (the red arrows) and draw cooler air up (the blue arrows). This movement of air (a gas, which is a fluid in the context of heat transfer) is characteristic of convection. Conduction is heat transfer through direct contact (e.g., heat moving through a metal rod), and radiation is heat transfer via electromagnetic waves (e.g., heat from the sun). Since the image shows air movement (a fluid - based heat transfer mechanism), it is convection.

Answer:

convection