At present, the only vehicles that can travel in this layer of our atmosphere, at an altitude between 50 and 80 kilometres, are rockets destined for space. Aeroplanes and other modern aircraft can’t fly above 50 kilometres because the lower air density at these altitudes doesn’t allow for sufficient lift.
The mesosphere is 22 miles (35 kilometers) thick. The air is still thin, so you wouldn’t be able to breathe up in the mesosphere.
The air would still be too thin to breathe. The lack of atmosphere would chill the Earth’s surface. We’re not talking absolute zero cold, but the temperature would drop below freezing. Water vapor from the oceans would act as a greenhouse gas, raising the temperature.
From lowest to highest, the major layers are the troposphere, stratosphere, mesosphere, thermosphere and exosphere. Troposphere. … Stratosphere. … Mesosphere. … Thermosphere. … Exosphere. … The Edge of Outer Space.
Exosphere. The upper limit of Earth’s atmosphere is the exosphere where the atmosphere merges into space.
Mesosphere, altitude and temperature characteristics The top of the mesosphere is the coldest area of the Earth’s atmosphere because temperature may locally decrease to as low as 100 K (-173°C).
It refers to altitudes above a certain point where the amount of oxygen is insufficient to sustain human life for an extended time span. This point is generally tagged as 8,000 m (26,000 ft, less than 356 millibars of atmospheric pressure).
Commercial jet aircraft fly in the lower stratosphere to avoid the turbulence which is common in the troposphere below. The stratosphere is very dry; air there contains little water vapor. Because of this, few clouds are found in this layer; almost all clouds occur in the lower, more humid troposphere.
This is the outside layer of the earth and is made of solid rock, mostly basalt and granite. There are two types of crust; oceanic and continental. Oceanic crust is denser and thinner and mainly composed of basalt. Continental crust is less dense, thicker, and mainly composed of granite.
In terms of its constituent elements, the mantle is made up of 44.8% oxygen, 21.5% silicon, and 22.8% magnesium.There’s also iron, aluminum, calcium, sodium, and potassium. These elements are all bound together in the form of silicate rocks, all of which take the form of oxides.
