Which is the hottest layer of atmosphere?
The thermosphereThe thermosphere is often considered the "hot layer" because it contains the warmest temperatures in the atmosphere.
Which is the coldest layer of atmosphere?
the mesosphereLocated between about 50 and 80 kilometers (31 and 50 miles) above Earth's surface, the mesosphere gets progressively colder with altitude. In fact, the top of this layer is the coldest place found within the Earth system, with an average temperature of about minus 85 degrees Celsius (minus 120 degrees Fahrenheit).02-Oct-2019
Why is thermosphere the hottest layer?
Because there are relatively few molecules and atoms in the thermosphere, even absorbing small amounts of solar energy can significantly increase the air temperature, making the thermosphere the hottest layer in the atmosphere.
Why is the thermosphere so hot?
Why does the temperature increase in the thermosphere? ... The temperature increases rapidly in this layer due to the absorption of huge amounts of incoming high energy solar radiation by atoms of nitrogen and oxygen. This radiation is then converted into heat energy and temperatures can climb in excess of 2700 (degrees)F.08-May-2002