Question

Very high in the earth's atmosphere, the temperature can be as high as 700 degrees Celsius, yet an animal there would freeze to death rather than roast. EXPLAIN

Answer 1

Yes, the temperature can be very high in the upper atmosphere but the density of the air (gas) is very low. That’s why the number of collisions of hot air molecules with animal is very low to roast the animal. Also the skin of animal would radiate heat to atmosphere. The emissivity of animal is greater than of atmosphere. Thus, the radiation heat loss of animal is much greater than energy from the radiation of atmosphere. So, animal will freeze to death.