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The atmosphere has a mass of about 5.15 × 10 18 kg, three quarters of which is within about 11 km (6.8 mi; 36,000 ft) of the surface. The atmosphere becomes thinner with increasing altitude, with no definite boundary between the atmosphere and outer space.
28 de jul. de 2023 · In short, the atmosphere is the protective bubble in which we live. This protective bubble consists of several gases (listed in the table below), with the top four making up 99.998% of all gases. Of the dry composition of the atmosphere, nitrogen by far is the most common.
Atmospheric particulates and aerosols are very small particles of solid or liquid suspended in the air. Particulates and aerosols play several important roles in atmospheric processes. Particulate matter includes dust, dirt, soot, smoke, and tiny particles of pollutants.
Key points. Earth is surrounded by a mixture of gases called the atmosphere. The composition of the atmosphere is 78 % nitrogen and 21 % oxygen, with the remaining 1 % consisting of water vapor, argon, carbon dioxide, and small amounts of other gases.
Nitrogen and oxygen are by far the most common gases in our atmosphere. Dry air is composed of about 78% nitrogen (N 2) and about 21% oxygen (O 2 ). The remaining less than 1% of the atmosphere is a mixture of gases, including argon (Ar) and carbon dioxide (CO 2).
19 de oct. de 2023 · Earth’s atmosphere is composed of about 78 percent nitrogen, 21 percent oxygen, 0.9 percent argon, and 0.1 percent other gases. Trace amounts of carbon dioxide, methane, water vapor, and neon are some of the other gases that make up the remaining 0.1 percent.
Because the troposphere is the lowest atmosphere layer, it contains 75 percent of the atmosphere’s mass. From largest to smallest, Earth’s atmosphere composition contains nitrogen, oxygen, argon, CO 2 , and trace gases.
