Question

Why is there little heat retained in the warm thermosphere? a. The pressure is too low c. The molecules move too fast b. The pressure is too high d. There are too many molecules to transfer heat


20 Points, plus brainly if multiple answers to whoever got it right first!

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Answer 1

The thermosphere is the highest section of the Earth's atmosphere. It starts about 53 miles above sea level and extends to between 311 to 621 miles. The exact extent of the thermosphere varies, as it swells and contracts based on the current level of solar activity. The thermosphere has an extremely low density and surprisingly high temperatures--between 932-3,632° F. What causes these extreme temperatures?

Heat and PressureThe extremely low pressure of the thermosphere also contributes to its high temperature. Heat is defined by the amount of energy possessed by the individual molecules of a material. In a warm gas, the particles will move around much more quickly than in a cool gas. At sea level, energetic particles will very quickly start to collide with other particles, losing energy with each collision. This loss of energy cools the gas unless more heat is constantly added. Low pressure means that not many particles are around to collide with, which leads to slower energy loss. Thus, a low-pressure gas takes much less energy to heat than a high-pressure gas.

Heat and Quantity
Even though the thermosphere is extremely hot, its low density means that it cannot efficiently convey that energy to objects moving through it. It has high heat, but low quantity. A mercury thermometer suspended within the thermosphere would read a temperature below freezing, as heat loss would exceed any energy the scattered particles of the thermosphere could transmit to the mercury. It is similar in concept to the heat generated by a candle flame, which is extremely hot at some points within the flame but is incapable of heating objects more than a few inches away. It is producing a high temperature, but a low quantity of heat.

Answer 2

a) The pressure is too low.

I don't know why is that but a possible deduction that I just made is that since the pressure is low, the temperature will be low as when we increase the pressure on something it makes the temperature rise.
And hence, it is because the pressure is too low.

EmoLord.