what is atmosphere in science

The atmosphere protects life on Earth by absorbing ultraviolet solar radiation and reducing temperature extremes between day and night. Exosphere - The last layer and the thinnest. Although the subject covers meteorology (the study of the weather) that is not all it is. The second layer, the stratosphere, extends to about 30 miles (50 kilometers) above Earth’s surface. Cluster of Alaskan Islands: One Super-Volcano? Atmosphere is defined as the area of air and gas enveloping objects in space, like stars and planets, or the air around any location. Life in Deep Ocean Thriving in 120 Degree C ... Tire-Related Chemical Killing Salmon in Streams, Low Cost of Shuttering Fossil Fuel Power Plants. Atmospheric science, interdisciplinary field of study that combines the components of physics and chemistry that focus on the structure and dynamics of Earth’s atmosphere. The pressure is greatest at sea level. The fifth and highest layer of the atmosphere is the exosphere. Earth’s atmosphere has six layers: the troposphere, the stratosphere, the mesosphere, the thermosphere, the ionosphere, and the exosphere. It is often called air. The sky is the first level of the atmosphere that we can see. The first 16 miles is where the bulk of this atmosphere lies. The Earth's atmosphere has layers, which are actually characterized by how the temperature of the atmosphere changes with altitude. Accessible across all of today's devices: phones, tablets, and desktops. The troposphere begins at the Earth's surface, which acts as a source of heat resulting from absorption of visible sunlight. This layer ends where Earth’s gravity is too weak to prevent particles of gas from drifting into space. Venus’ atmosphere is much thicker than Earth’s, preventing a clear view of the planet. Atmosphere was coined by 17th-century scientists combining the Greek words for vapor, atmos, and sphere, sphaira. Earth's atmosphere. Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. … *Seasonal winds which blow alternately from the Asian mainland and from the Pacific Ocean, are accompanied by fierce storms. any gaseous envelope or medium: The ether was treated with a sulfate in an atmosphere of coal gas. At higher elevations, the atmosphere is mostly hydrogen and helium. We’ve been busy, working hard to bring you new features and an updated design. It is also a moving source of life for every creature of the planet. Three-quarters of the atmosphere's mass is within 11 km of the planetary surface. Earth's atmosphere is primarily composed of nitrogen and oxygen with water vapor comprising 0.25 percent of the atmosphere by mass. Click here for larger image . Air becomes lighter farther away from Earth’s surface. Atmospheric science is the study of the physics and chemistry of clouds, gases, and aerosols (airborne particles) that surround the planetary bodies of the solar system. There is no definite boundary between the atmosphere and outer space. Choose a language from the menu above to view a computer-translated version of this page. The weight of the air is known as atmospheric pressure. After translating an article, all tools except font up/font down will be disabled. The atmosphere is more than just layers of gases surrounding the planet. The third layer is the mesosphere. Scientists divide the atmosphere into five regions, or layers. The same safe and trusted content for explorers of all ages. Atmospheric scientists may study the weather and make predictions for what it might look like in an hour, a day, a week or in the next season. An example of atmosphere is the ozone and other layers which make up the Earth’s sky as we see it. An example of atmosphere is the air and gases contained inside a greenhouse. cloud: A plume of molecules or particles, such as water droplets, that move under the action of an outside force, such as wind, radiation or water currents. Improved homework resources designed to support a variety of curriculum subjects and standards. A concentration of plasma in the Earth's atmosphere, called the ionosphere, interacts with solar winds, ultraviolet radiation and radio waves. Chemistry. Glucosamine May Reduce Overall Death Rates as Effectively as Regular Exercise, Study Suggests, Connection Between Gut Bacteria and Vitamin D Levels, Restoring a Rudimentary Form of Vision in the Blind, Physicists Capture the Sound of a Perfect Fluid, Astronomers to Release Most Accurate Data Ever for Nearly Two Billion Stars. The atmosphere on Mars is also dominated by carbon dioxide, although unlike Venus, it is quite thin. Although the subject covers meteorology (the study of the weather) that is not all it is. Other planets , and some of their larger moons, also have atmospheres. Atmospheric scientists may study the weather and make predictions for what it might look like in an hour, a day, a week or in the next season. The lithosphere, sometimes called the geosphere, refers to all of the rocks of the … Our atmosphere is the layers of gases surrounding the earth. Science: Regions of the Atmosphere. Why isn’t there much hydrogen found in the atmosphere? The atmosphere consists of five layers and is responsible for Earth’s weather. Atmosphere definition is - the gaseous envelope of a celestial body (such as a planet). Earth's atmosphere is a layer of gases surrounding the planet Earth and retained by the Earth's gravity. Please note: Text within images is not translated, some features may not work properly after translation, and the translation may not accurately convey the intended meaning. In evolution of the atmosphere: Sinks. There, the gas particles are pressed together by the weight of the air above them. Questions? By continuing to use this site, you consent to the terms of our cookie policy, which can be found in our. Take a minute to check out all the enhancements! If you and your coworkers talk behind each other's backs, you will create a nasty atmosphere at work. Earth's atmosphere is a layer of gases surrounding the planet Earth and retained by the Earth's gravity. Near Earth’s surface, the atmosphere is about three-fourths nitrogen and one-fifth oxygen. The first layer of the Earth’s atmosphere, troposphere starts from the surface of the planet and extends up to a vertical distance of 4.34 miles near the poles and 10.56 miles near the equator. Above 16 miles, the atmosphere becomes thinner and thinner, and there is less pressure exerted on matter. The fourth layer, the thermosphere, ranges from about 50 to 300 miles (80 to 480 kilometers) above Earth. At sea level, air has a pressure of 14.7 pounds (6.7 kilograms) per square inch. Learn about threats to air quality, the latest scientific research in atmospheric chemistry, atmospheric physics and more. Troposphere. The temperature of troposphere decreases with altitude, which means that the lowest part of the layer is the warmest at any given point of time. Have any problems using the site? Apart from those processes, three other sinks merit attention and are described here. The dominant pathways by which gases are removed from the … We often call the atmosphere “air.” All planets have an atmosphere, but Earth is the only planet with the correct combination of gases to support life. We hope you and your family enjoy the NEW Britannica Kids. The atmosphere consists of several different gases. The dominant pathways by which gases are removed from the present atmosphere are discussed below in the section on biogeochemical cycles. This can be attributed to the fact that this layer is most often heated by transfer of energy from the s… It extends up to about 6 miles (10 kilometers) above Earth’s surface. An atmosphere is more likely to be retained if the gravity it is subject to is high and the temperature of the atmosphere is low. A new, third level of content, designed specially to meet the advanced needs of the sophisticated scholar. Most of Earth’s weather, including the wind and most clouds, exists in the troposphere. The second atmosphere formed a little after 4.5 million years ago (mya) and was produced due to volcanic outgassing. To re-enable the tools or to convert back to English, click "view original" on the Google Translate toolbar. The atmosphere is also responsible for the aurora borealis. Or view hourly updated newsfeeds in your RSS reader: Keep up to date with the latest news from ScienceDaily via social networks: Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. How to use atmosphere in a sentence. An atmosphere is a blanket of gases that surrounds Earth. Other planets , and some of their larger moons, also have atmospheres. To share with more than one person, separate addresses with a comma. Earth's atmosphere is the only one in the solar system capable of supporting life. Atmosphere refers to the gases surrounding a star or planetary body held in place by gravity. We live at the bottom of an invisible ocean called the atmosphere, a layer of gases surrounding our planet. It goes all the way to 10,000 km above the Earth's … It is often called air. The air of our planet is 79% nitrogen and just under 21% oxygen; the small amount remaining is composed of argon, carbon dioxide, and other trace gasses. The gases are held close to Earth by a force called gravity. Its atmosphere is dominated by carbon dioxide, and features swirling clouds of sulfuric acid. As the weight of the air decreases, so does the air pressure. 004 - The AtmosphereIn this video Paul Andersen explains how the atmosphere surrounds the planet. Dry air from earth’s atmosphere contains 0.038% of carbon dioxide, 20.95% of oxygen, 78.08% of nitrogen and 0.93% of argon. A body is more likely to retain an atmosphere over time if gravity is high and the temperature of the atmosphere is low. Auroras are caused by the bombardment of solar electrons on oxygen and nitrogen atoms in the atmosphere. The stratosphere includes the ozone layer. It is held near the surface of the planet by Earth’s gravitational attraction. Water vapor and dust are also part of Earth ’s atmosphere. The atmosphere is the layer of gas that surrounds Earth. The Atmosphere. The density of the atmosphere decreases outward, because the planet’s gravitational attraction, which pulls the gases and aerosols inward, is greatest close to the surface. Research in atmospheric science includes such varied areas of interest as: Climatology — the study of long-term weather and temperature trends. a conventional unit of pressure, the normal pressure of the air at sea level, about 14.7 … Atmospheric Science is the umbrella term for anyone who works in studying the atmosphere of our planet. Britannica does not review the converted text. Atmospheric science is the study of the physics and chemistry of clouds, gases, and aerosols (airborne particles) that surround the planetary bodies of the solar system. Atmosphere definition is - the gaseous envelope of a celestial body (such as a planet). cloud: A plume of molecules or particles, such as water droplets, that move under the action of an outside force, such as wind, radiation or water currents. In evolution of the atmosphere: Sinks It is not intended to provide medical or other professional advice. The atmospheric pressure drops to almost zero when you reach 30 kilometers up in the atmosphere. 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It is also called barometric pressure. Lesson Summary. The atmosphere is the body of gasses that surrounds our planet, held in place by earth's gravity. This mixture of gases is commonly known as air. The atmospheric composition of gas on Earth is largely conducted by the by-products of the life that it nurse. It contains roughly 78% nitrogen and 21% oxygen 0.97% argon and … Click here for larger image . Views expressed here do not necessarily reflect those of ScienceDaily, its staff, its contributors, or its partners. Earth's atmosphere is a layer of gases surrounding the planet Earth and retained by the Earth's gravity. As height increases, the air molecules become separated by more space, and the weight decreases. It slowly becomes thinner and fades away into space. atmosphere: The envelope of gases surrounding Earth or another planet. The troposphere starts at the Earth's surface and extends 8 to 14.5 kilometers high (5 … Nitrogen and oxygen account for 99 percent of the gases in dry air, with argon, carbon dioxide, helium, neon, and other gases making up minute portions. The atmosphere is the layer of gas that surrounds Earth. Atmosphere, the gas and aerosol envelope that extends from the ocean, land, and ice-covered surface of a planet outward into space. An atmosphere (from Ancient Greek ἀτμός (atmos), meaning 'vapour', and σφαῖρα (sphaira), meaning 'ball' or 'sphere') is a layer or a set of layers of gases surrounding a planet or other material body, that is held in place by the gravity of that body. The top of the troposphere layer of the atmosphere is called the tropopause. Outgassing is the release of gas that was trapped in some other material. It is often called air. Atmospheric Science is the umbrella term for anyone who works in studying the atmosphere of our planet. Ozone blocks much of the Sun’s radiation that would harm plants and animals if it reached Earth. It contains roughly 78% nitrogen and 21% oxygen 0.97% argon and carbon dioxide 0.04% trace amounts of other gases, and water vapor. The Lithosphere. The Troposphere. atmosphere: The envelope of gases surrounding Earth or another planet. Financial support for ScienceDaily comes from advertisements and referral programs, where indicated. Environmental Science Earth Systems and Resources The Atmosphere. Other planets, and some of their larger moons, also have atmospheres. Nature has equipped Earth with several giant "sponges," or carbon sinks, that can help humans battle climate change. It extends up to about 50 miles (80 kilometers) above Earth’s surface. The troposphere begins at the Earth's surface, which acts as a source of heat resulting from absorption of visible sunlight. Gas giants are composed of gases. The atmosphere includes all the gases surrounding the Earth. 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