Multiple choice

When a heater is on in a room the warmest place to be is

  1. by the heater

  2. by a window

  3. on the floor

  4. on the ceiling

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

When a heater is turned on, it warms the surrounding air, making it less dense than the cooler air in the room. This warm air rises to the top of the room through convection, making the ceiling the warmest area. Conversely, the coolest air sinks to the floor.