School LAB 3: Atmospheric Pressure& Moisture Our atmosphere is a very dynamic ar

Question

School LAB 3: Atmospheric Pressure& Moisture Our atmosphere is a very dynamic area-especially when we see what type of interactions it has with the surrounding environment. This lab will begin discussing the ideas behind atmospheric gasses, pressure, humidity and temperature Beginning with pressure, the air in the atmosphere is made up of a number of gases; we can differentiate them two ways, either as a permanent or variable gas. What this means are those permanent gasses of the atmosphere do not change, these percentages are constant and will remain so long after we are gone, but for variable gasses-these gasses can change and they do. Table 1-2 Permanent Gases of the Atmosphere 1. What are the top two permanent gasses found in our atmosphere? 2. What are the top two variable gasses A found in our atmosphere? 30.18 3. With variable gasses, why are they mn variable? What can control the amount ydrogem emitted? 1313 H2 Table 1-3 Variable Gases of the Formulaby Vollme Back to pressure, these permanent and variable gases press down on the Earth's Carthan Dhnis surface, exerting a force that we call atmospheric pressure or air pressure. Although we are usually unaware of this pressure, it actually presses down very hard- roughly equivalent to the force of an elephant balancing on your shoulders Water Vapor 025 Both air pressure and air density decrease with increasing altitude. 4. T or F: Air pressure is higher at lower altitudes. 500m 400- 5. T or F: Air molecules Air density is higher at lower altitudes 300 6. T or F There is more space between air molecules at higher altitudes 3200 - Air density 7. T or F There is less oxygen to breathe at the top of a high mountain than there is at sea level. E 100 Low pressure Low density High pressure High density Patrich Physical Geography Lab | 1

Explanation / Answer

1) The top two permanent gases in our atmosphere are nitrogen and oxygen with nearly 78% and 21% of volume respectively.

2) The top two variable gases present in our atmosphere is water vapour and carbon dioxide, because their content is much higher than other variable gases.

3)Variable gases are mostly dependent over human activities,and can change in quantity or can vary in atmosphere. To control the increase in this variable gases, we can implement laws and protections, and should minimise the emission of this gases from industry chambers and gases emitted from transport systems and all.

4) From the graph given at side of the first page, we can conclude easily that when altitude is low, the pressure is high, so the statement is TRUE.

5)This condition is also TRUE,when altitude is low, the density is high, same as, in case of pressure.

6) Where pressure is high, there is less space between air molecules, but at higher altitudes, the pressure is low, thus they have more air space between them.So the condition is TRUE.

7) Where pressure is lower, there is a difficulty to breath oxygen, so the higher altitudes have low pressure,making difficult to breath. So the statement is TRUE.

8) The statement is absolutely TRUE,as we can just look the trend of the graph.

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