Resultado de búsqueda
13 de may. de 2024 · NASA. When we talk about the Earth's Atmosphere, what do we mean? Imagine a layer cake, wrapping around the Earth. That is essentially what the Earth’s atmosphere is like: layers upon layers of gas surrounding the Earth, working to protect the planet.
Atmospheric pressure is the total weight of the air above unit area at the point where the pressure is measured. Thus air pressure varies with location and weather . If the entire mass of the atmosphere had a uniform density equal to sea level density (about 1.2 kg per m 3 ) from sea level upwards, it would terminate abruptly at an altitude of 8.50 km (27,900 ft).
The five principal layers of the atmosphere are the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. Troposphere: The troposphere is the layer closest to Earth. It is the densest layer (i.e., contains the most air particles), and is where most of Earth’s weather and cloud formation occurs.
15 de may. de 2024 · atmosphere, the gas and aerosol envelope that extends from the ocean, land, and ice -covered surface of a planet outward into space. The density of the atmosphere decreases outward, because the gravitational attraction of the planet, which pulls the gases and aerosols (microscopic suspended particles of dust, soot, smoke, or ...
- Roger A. Pielke
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. The atmosphere is divided into five different layers, based on temperature.
Chemical element - Atmosphere, Compounds, Elements: The atmosphere is the most homogeneous and thus the most easily studied of the geospheres. Its mass is readily determined from the product of the average height of the mercury barometer in centimetres, the density of mercury (13.6 grams per cubic centimetre), and the area of the Earth (5.1 × ...
Extending from an altitude of 80 km (50 mi), the lightest elements (hydrogen and helium) are found at the outer margins of the atmosphere. The heavier elements (nitrogen and oxygen) are found at the base of the layer. The homosphere lies between the Earth's surface and the heterosphere.
