What is altitude?
Altitude is the height of something at a given point, which in this case is the height of the atmosphere.
What is pressure?
Pressure is the physical force that goes fore or against with an object when it comes in contact which in this case the object that is being pressured on is the atmosphere itself.
Relations?
The height of the atmosphere that is above the earth's surface is able to effect the the density of the air pressure so it is able to change the air's temperature, either making it a little bit cooler or warmer/hotter.
Altitude is the height of something at a given point, which in this case is the height of the atmosphere.
What is pressure?
Pressure is the physical force that goes fore or against with an object when it comes in contact which in this case the object that is being pressured on is the atmosphere itself.
Relations?
The height of the atmosphere that is above the earth's surface is able to effect the the density of the air pressure so it is able to change the air's temperature, either making it a little bit cooler or warmer/hotter.
bASIC THEORY
The pressure decrease and the air gets thinner as the altitude goes higher
But why?
When the altitude is higher, the air and weight is very little which results in a lower pressure, that means the higher the atmosphere layer, the less pressure there will be and the lower the atmosphere layer, the more pressure. The reason on why each layer have different pressure is because the layer and the amount of gas(including air) are not spread evenly around the earth, in that case, there are several parts that contains more gas(including air) than other parts/