Atmosphere - National Geographic Society
WebOct 19, 2023 · noun. lowest layer of the Earth's atmosphere, extending from the surface to about 16 kilometers (10 miles) above. Earth’s atmosphere is so much more than the air we breathe. A trip from the surface of Earth to outer space would result in passing through five different layers, each with very different characteristics.
Atmosphere - Wikipedia
WebAn atmosphere (from Ancient Greek ἀτμός (atmós) 'vapour, steam', and σφαῖρα (sphaîra) 'sphere') is a layer of gasses that envelop an astronomical object, held in place by the gravity of the object. A planet retains an atmosphere when the gravity is great and the temperature of the atmosphere is low.
Atmosphere | Definition, Layers, & Facts | Britannica
WebApr 18, 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 …
What Is the Atmosphere? | Center for Science Education
WebThe atmosphere is a mixture of gases that surrounds the Earth. It helps make life possible by providing us with air to breathe, shielding us from harmful ultraviolet (UV) radiation coming from the Sun, trapping heat to warm the planet, and preventing extreme temperature differences between day and night.
Atmosphere of Earth - Wikipedia
WebThe atmosphere of Earth creates pressure, absorbs most meteoroids and ultraviolet solar radiation, warms the surface through heat retention (greenhouse effect), and reduces temperature extremes between day and night (the diurnal temperature variation), maintaining conditions allowing life and liquid water to exist on the Earth's surface.
Earth's Atmosphere | NASA Space Place – NASA Science for Kids
WebDec 11, 2019 · Earth’s atmosphere is similar to a jacket for our planet. It surrounds our planet, keeps us warm, gives us oxygen to breathe, and it is where our weather happens. Earth’s atmosphere has six layers: the troposphere, the stratosphere, the mesosphere, the thermosphere, the ionosphere, and the exosphere.
Atmosphere - National Geographic Society
WebAtmosphere. Saved by. 185 educators. One of the main components of Earth’s interdependent physical systems is the atmosphere. An atmosphere is made of the layers of gases surrounding a planet or other celestial body. Earth’s atmosphere is composed of about 78% nitrogen, 21% oxygen, and one percent other gases.
Earth's atmosphere (article) | Khan Academy
WebEarth’s atmosphere consists of five distinct layers that are distinguished by temperature gradients—the layers alternate between having temperatures that increase or decrease with altitude. The five principal layers of the atmosphere are the troposphere, stratosphere, mesosphere, thermosphere, and exosphere.
Earth’s Atmosphere: A Multi-layered Cake - Science@NASA
WebOct 02, 2019. Article. Diagram of the layers within Earth’s atmosphere. NASA. Earth’s atmosphere has five major and several secondary layers. From lowest to highest, the major layers are the troposphere, stratosphere, mesosphere, …
Earth - Atmosphere, Climate, Ozone | Britannica
WebThe atmosphere is commonly described in terms of distinct layers, or regions. Most of the atmosphere is concentrated in the troposphere, which extends from the surface to an altitude of about 10–15 km (6–9 miles), depending on latitude and season. The behaviour of the gases in this layer is controlled by convection.
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