1. Identify as conduction, convection, or radiation? A. In a swimming pool, the water near the surface is slightly warmer. The warm water rises because of ….. B. A chair is placed several feet from a fire in a fireplace. The fireplace has a glass screen.
A. An example of convection -- extra part: because of its lower density.
B. The chair will be warmed by radiation.
A. In convection warmer fluid molecules float to the top because the warmer fluid expands - decreasing its density.
B. The glass blocks convection and the air between the chair and the glass blocks conduction. Electromagnetic radiation passes through the glass.