4. A high-quality sleeping bag will keep you warm even during a winter camping trip high in the mountains. How do you stay warm when the air around you is very cold? A. The sleeping bag produces thermal energy that keeps you warm. B. The sleeping bag transfers thermal energy from the air to your body. C. The sleeping bag slows the transfer of thermal energy produced by your body into the air. D. The sleeping bag increases the production of thermal energy by your body.

Polar bears have thick fur that traps air. How does this air helps the bear during winter ?A. The air reduces thermal (heat) energy flow to the environment.B. The air produces thermal (heat) energy to keep the bear warm.C. The air transforms chemical energy to thermal (heat) energy.D. The air transfers thermal (heat) energy from environment to the bear.

In winter the air just above the top bunk of a bunk bed is warmer than the air just above the bottom bunk because warm air rises. Which of the following describes the method of heating that causes this difference in temperature?A radiation from the roomB heat transfer through the wallsC heat conduction through the bedD convection currents from the room

Which statement best describes what happens when thermal energy of the air around a fire is transferred to the surrounding air?A.The thermal energy is destroyed as it changes to chemical energy.B.The thermal energy changes to chemical energy.C.The thermal energy is spread out by the surrounding air.D.The thermal energy is destroyed over time.SUBMITarrow_backPREVIOUS

The thermal environment may be regulated to permit an easy and comfortable rate of loss for the heat that is generated by humans for any given activity to avoid body chill in one case and heavy respiration in the other

Two kittens are sleeping while curled up together. They are relying mainly on what kind of heat transfer?A.Chemical heatingB.Convection heatingC.Thermal conductionD.Radiation warming