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 of Earth - Wikipedia
WebThe 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.
Atmosphere | Definition, Layers, & Facts | Britannica
Web3 days ago · 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 …
Atmosphere of Earth - Simple English Wikipedia, the free …
WebIt is held in place by Earth's gravity. It is today made up mainly of nitrogen (78.1%). It also has plentiful oxygen (20.9%) and small amounts of argon (0.9%), carbon dioxide (~ 0.035%), water vapor, and other gases. The atmosphere protects life on Earth by absorbing (taking) ultraviolet rays from the Sun.
Atmosphere - National Geographic Society
WebOct 19, 2023 · mesosphere. noun. region in Earth's atmosphere between the stratosphere and the thermosphere, about 50-80 kilometers (31-50 miles) above the Earth's surface. meteor. noun. rocky debris from space that enters Earth's atmosphere. Also called a shooting star or falling star. ozone layer. noun.
Earth - Atmosphere, Climate, Ozone | Britannica
WebEarth is surrounded by a relatively thin atmosphere (commonly called air) consisting of a mixture of gases, primarily molecular nitrogen (78 percent) and molecular oxygen (21 percent). Also present are much smaller amounts of gases such as argon (nearly 1 percent), water vapour (averaging 1 percent but highly variable in time and location ...
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.
Atmospheric science - Wikipedia
WebGlossaries. Weather portal. v. t. e. Atmospheric science is the study of the Earth's atmosphere and its various inner-working physical processes. Meteorology includes atmospheric chemistry and atmospheric physics with a major focus on weather forecasting.
Layers of Earth's Atmosphere | Center for Science Education
WebEarth's atmosphere is composed of a series of layers, each with its own specific traits. Moving upward from ground level, these layers are called the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. The exosphere gradually fades away into the realm of interplanetary space.
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.
- Some results have been removed
Skip to content