Αποτελέσματα Αναζήτησης
21 Ιαν 2023 · Structure of the atmosphere. The main divisions of the atmosphere are defined by the elevations at which the sign of the temperature gradient changes. The chemical formulas at the right show the major species of interest in the various regions.
24 Μαΐ 2024 · The atmosphere is not a homogeneous mass of gases, but has a layered structure as defined by vertical temperature changes. Two broad regions can be identified using air composition as a means to subdivide the atmosphere.
21 Απρ 2021 · The earth’s atmosphere is the layer of gases and aerosols surrounding the planet and held by the earth’s gravitational force. The composition and structure of the atmosphere define its role, both as a producer of weather and a protector of life.
The atmosphere surrounds the Earth and holds the air we breathe; it protects us from outer space; and holds moisture (clouds), gases, and tiny particles. 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.
The atmosphere of Earth is composed of a layer of gas mixture that surrounds the Earth 's planetary surface (both lands and oceans), known collectively as air, with variable quantities of suspended aerosols and particulates (which create weather features such as clouds and hazes), all retained by Earth's gravity.
The term 'Atmospheric Composition' refers to the combination and proportion of different gases present in the Earth's atmosphere, such as nitrogen, oxygen, argon, water vapor, carbon dioxide, and ozone.
25 Οκτ 2024 · The composition of the atmosphere is more or less constant with height to an altitude of about 100 km (60 miles), with particular exceptions being water vapour and ozone. The atmosphere is commonly described in terms of distinct layers, or regions.
