The layers Earth's Atmosphere from closest to farthest: Troposphere, Stratosphere, Mesosphere, Thermosphere, Exosphere. (It is often argued whether the Exosphere is actually part of the atmosphere or not. The amount of scientists who believe and don't is about 50-50.)
As you ascend into the sky, the atmospheric temperature follows a cold-hot pattern.
The temperature in the Troposphere is cooler as you go up. Above the Troposphere is the Stratosphere. The Stratosphere is significantly warmer and more dry than the Troposphere. Above the Stratosphere is the Mesosphere. The Mesosphere is the coldest layer of the Atmosphere at negative 130 degrees Fahrenheit. Above the Mesosphere is the Thermosphere. The Thermosphere is the hottest layer of the Atmosphere at approximately 2,700 degrees Fahrenheit. Above the Thermosphere is the Exosphere. The Exosphere is extremely thin and where the Atmosphere merges with outer space. It's comprised of widely dispersed particles of Hydrogen and Helium.
it goes higher
I think it is helium, I could be wrong.
They have to carry oxygen cylinders with them as it allows them to breath at high altitude. The temperature also decreases as we go higher and higher.
Density = mass divided by volume. Mass is determined by the individual atoms or molecules and their compression (how close together they are). Compression is affected by external elements such as temperature and atmosphere. Temperature can increase or decrease density (hotter temps lead to decrease in density as atoms separate). Atmospheric pressure can also change the density (air is less dense the further you get from Earth/higher you go in the sky).
Our sky is blue DURING THE DAY because of two things: 1) sunlight is entering our atmosphere 2) our atmosphere is thick enough to preferentially scatter blue light. If either (1) or (2) cease to be true, then the sky will NOT be blue. As night "falls," the sky does not go instantly from blue to black. Instead, less and less of our Sun's light is available to scatter, and thus the sky goes slowly from blue to black. It's the same way as you go higher and higher. There is no altitude at which there is simply no longer enough atmosphere to scatter enough sun light to give the sky a blue look. It is more the case that, as you go higher and higher, the sky becomes less and less blue -- just like at night "fall." For SOME idea of how our sky changes, check out a video of a space shuttle launch.
the temperature already rise as you climb up in the stratosphere.
In the troposphere it will get colder, uet in the stratosphere it should get warmer.
less pressure and cooler temperature
Yes. The higher you go the lower the pressure is and the lower you go the higher the pressure is. That's why your ears feel like popping in a plane or in a vally and things like that.
The air temperature decreases as you go higher. On the average temperature decreases about 6.5 degrees Celsius for each kilometer.
At higher pressure the boiling point is higher.
The higher you go - the lower the temperature.
it goes higher
I think it is helium, I could be wrong.
The air becomes less dense, the higher you go. And generally, the temperature gets colder until you reach the thermosphere, which is the hottest part of Earths atmosphere.
Because of temperature change when you are up is higher and down is lower. So the air pressure would go lower.
They have to carry oxygen cylinders with them as it allows them to breath at high altitude. The temperature also decreases as we go higher and higher.