Atmosphere | Definition, Layers, & Facts | Britannica
2024年11月15日 · 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 …
Atmosphere - Wikipedia
An atmosphere (from Ancient Greek ἀτμός (atmós) 'vapour, steam' and σφαῖρα (sphaîra) 'sphere') [1] is a layer of gases that envelop an astronomical object, held in place by the gravity of the …
What Is... Earth's Atmosphere? - NASA
2024年5月13日 · “The Earth’s atmosphere allows life to exist. . . like a protective bubble that surrounds the planet,” stated Ueyama. Although we cannot directly see the atmosphere, it …
Atmosphere of Earth - Wikipedia
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 …
What Is the Atmosphere? - Center for Science Education
The 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 …
Atmosphere Definition & Meaning - Merriam-Webster
The meaning of ATMOSPHERE is the gaseous envelope of a celestial body (such as a planet). How to use atmosphere in a sentence.
Layers of the Atmosphere - National Oceanic and Atmospheric Administration
2024年8月20日 · Each of the layers are bounded by "pauses" where the greatest changes in thermal characteristics, chemical composition, movement, and density occur. This is the …
Layers of the Earth's Atmosphere - Facts with Diagram - Science …
2023年10月6日 · The atmosphere of the earth is the layer of gases (commonly called air) that surrounds the earth and creates an inhabitable environment, maintains temperature, causes …
The Atmosphere | National Oceanic and Atmospheric Administration
2024年7月2日 · 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 - Definition, Layers of Atmosphere, Composition of ...
An atmosphere is a blanket of gases that surrounds Earth. It is held near the surface of the planet by Earth’s gravitational attraction. Argon, oxygen and nitrogen from the three main …