describe the air composition with help of chart
Answers
Answer:
Students will be able to identify the composition of the Earth's atmosphere, aka the gases of the atmosphere, and analyze how these gases are important to life.
Vocabulary:
Nitrogen, Oxygen, Composition, Trace Gases, Carbon Dioxide, Water Vapor, Air Pressure, Air Temperature, Density, Mass, Volume
"Composition of Air"
Air is easy to forget about. We usually can’t see it, taste it, or smell it. We can only feel it when it moves. But air is actually made of molecules of many different gases. It also contains tiny particles of solid matter, called particulate matter.
Gases in Air
Figure below shows the main gases in air. Nitrogen and oxygen make up 99 percent of air. Argon and carbon dioxide make up much of the rest. These percentages are the same just about everywhere in the atmosphere.
The pie chart to the left identifies the most common gases in the atmosphere, which can include 78% Nitrogen, 21% Oxygen, Trace Gases 1%. *Note, that all other gases consist of trace gases (water vapor is one of these).
Air also includes water vapor. The amount of water vapor varies from place to place. That’s why water vapor isn’t included in Figure to the right. It can make up as much as 4 percent of the air.
Particles in the Air
Air includes many tiny particles. The particles may consist of dust, soil, salt, smoke, or ash. Some particles pollute the air and may make it unhealthy to breathe. But having particles in the air is very important. Tiny particles are needed for water vapor to condense on. Without particles, water vapor could not condense. Then clouds could not form and Earth would have no rain.
