In this way, Earth's atmosphere can be divided (called atmospheric stratification) into five main layers: troposphere, stratosphere, mesosphere, thermosphere, and exosphere. The altitudes of the five layers are as follows: Exosphere: 700 to 10,000 km (440 to 6,200 miles) Thermosphere: 80 to 700 km (50 to 440 miles) See more The atmosphere of Earth is the layer of gases, known collectively as air, retained by Earth's gravity that surrounds the planet and forms its planetary atmosphere. The atmosphere of Earth creates pressure, absorbs most See more In general, air pressure and density decrease with altitude in the atmosphere. However, the temperature has a more complicated profile with altitude, and may remain relatively … See more Solar radiation (or sunlight) is the energy Earth receives from the Sun. Earth also emits radiation back into space, but at longer wavelengths that humans cannot see. Part of the incoming and emitted radiation is absorbed or reflected by the atmosphere. In … See more Earliest atmosphere The first atmosphere consisted of gases in the solar nebula, primarily hydrogen. There were probably simple hydrides such as those now found in the gas giants (Jupiter and Saturn), notably water vapor, methane and See more The three major constituents of Earth's atmosphere are nitrogen, oxygen, and argon. Water vapor accounts for roughly 0.25% of the atmosphere by mass. The concentration of … See more Pressure and thickness The average atmospheric pressure at sea level is defined by the International Standard Atmosphere as … See more Atmospheric circulation is the large-scale movement of air through the troposphere, and the means (with ocean circulation) by which heat is distributed around Earth. The large-scale … See more WebJan 20, 2024 · Composition of the atmosphere Except for water vapor, whose atmospheric abundance varies from practically zero up to 4%, the fractions of the major atmospheric components N 2, O 2, and Ar are remarkably uniform below about 100 km.
Unlocking the secrets of Earth
WebApr 27, 2024 · Over time, this worldwide magma ocean released gases such as nitrogen, hydrogen, carbon and oxygen, creating a new atmosphere, the oldest version of the one … WebThe Earth Science Interactive Notebook Series: Earth's Atmosphere showcases student's ability to:Describe the composition of Earth's atmosphereState how the atmosphere is important to living thingsIdentify some properties of airExplain how increasing altitude affects air pressure and densityIdentify... darknetguns location
3.1: Structure and Composition of the Atmosphere
WebEarth’s original atmosphere was rich in methane, ammonia, water vapour, and the noble gas neon, but it lacked free oxygen. It is likely that hundreds of millions of years … WebThe first atmosphere was formed by outgassing of gases trapped in the interior of the early Earth, which still goes on today in volcanoes. For the Early Earth, extreme volcanism occurred during differentiation, when … WebAir is a mixture of several gases, where the two most dominant components in dry air are 21 vol% oxygen and 78 vol% nitrogen. Oxygen has a molar mass of 15.9994 g/mol and nitrogen has a molar mass of 14.0067 g/mol. darknetone phishing