Three-quarters of the atmosphere is located within 11 kilometers of the Earth's surface. Earth’s atmosphere has six layers: the troposphere, the stratosphere, the mesosphere, the … The stratosphere extends up to 25 miles (40 kilometers) above the Earth and is characterized by an increase in temperature with increasing altitude and by jet streams that move mostly in a horizontal motion. phere (ăt′mə-sfîr′) n. 1. The Earth’s atmosphere consists mainly of nitrogen, oxygen, argon, water vapor, carbon dioxide, and small amounts of other gases and solid and liquid particles. Britannica does not review the converted text. Scientists have developed three different classification systems for the atmosphere. Asimov, Isaac. The second layer, the stratosphere, extends to about 30 miles (50 kilometers) above Earth’s surface. Other planets, and some of their larger moons, also have atmospheres. Near Earth’s surface, the atmosphere is about three-fourths nitrogen and one-fifth oxygen. 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. To share with more than one person, separate addresses with a comma. Only the Earth’s atmosphere will be dealt with in this article. Nutrient Cycles The Earth's environment is constantly recycling nutrients so they can be used by different parts of the environment. The Earth's atmosphere is divided up into five layers:Let's Learn about each layer one by one. The atmosphere becomes thinner and thinner as the distance from Earth increases. It is also called barometric pressure. 1. countable noun [usually singular] A planet's atmosphere is the layer of air or other gases around it....dangerous levels of pollution in the Earth's atmosphere. (Walker, 1985). The layer closest to Earth is the troposphere. Atmosphere:  Absorbs the energy from the Sun  protects us from high-energy radiation  The atmosphere protects and supports life. The atmosphere might be invisible, but there's a lot going on up there! Layers of the atmos… The atmosphere consists of several different gases. The atmosphere is a thin layer of gases that covers the Earth, a lot like a big blanket. We live at the bottom of an invisible ocean called the atmosphere, a layer of gases surrounding our planet. Atmosphere is a layer above earth that is made out of several types of gases which includes 78% of nitrogen, 21% of oxygen and 1% of other gases outside of nitrogen and oxygen. 3 : the air … Earth is comprised of four spheres. In the late 1980s there was some concern that the ozone layer was being destroyed by pollution, and an effort was begun to prevent its destruction (see environmental pollution). For example, the atmosphere interacts with land to affect weather. Weather forecasts provide an estimate of the conditions we expect to experience in the near future and are based on statistical models of similar conditions from previous weather events. One of its jobs is to basically cover the planet to protect us from the vacuum of space, down here on Earth. Information and translations of atmosphere in the most comprehensive dictionary definitions resource on the web. The spheres interact to effect Earth’s systems and processes. A new, third level of content, designed specially to meet the advanced needs of the sophisticated scholar. We hope you and your family enjoy the NEW Britannica Kids. The air composing the atmosphere moves freely—sometimes violently. How Did We Find Out About the Atmosphere? The gases are held close to Earth by a force called gravity. All living organisms, right from the algae to the plants, the wildlife to human beings, form the biosphere. Gases surrounding our planet create our atmosphere Earth's atmosphere is the layer of gases that surrounds our planet. Atmosphere refers to the gases surrounding a star or planetary body held in place by gravity. It is often called air. Scientists divide the atmosphere into five regions, or layers. Choose a language from the menu above to view a computer-translated version of this page. Because of this, the sky appears blue. 2. It extends up to about 50 miles (80 kilometers) above Earth’s surface. At higher elevations, the atmosphere is mostly hydrogen and helium. As the weight of the air decreases, so does the air pressure. the air or climate in a particular place the atmosphere was thick with smoke a general pervasive feeling or mood an atmosphere of elation the prevailing tone or mood of a novel, symphony, painting, or other work of art a special mood or character associated with a place During the day as the heat of the Sun penetrates the air and warms the Earth, the atmosphere traps this heat so that it escapes more slowly into space, making the night warmer than it would be without this effect. Atmosphere For Kids: Atmosphere. As the weight of the air decreases, so does the air pressure. The term weather describes the state of the atmosphere at a given point in time and geographic location. The atmosphere clings tightly to the Earth by the attraction of gravity. The atmosphere clings tightly to the Earth by the attraction of gravity. The ionosphere—a region of electrically charged particles, or ions—may be divided into regions according to the degree of ionization. The highest layer of the atmosphere, the exosphere, extends beyond the thermosphere. The Earth's surface absorb the sunlight’s energy. Definition of Atmosphere. The weight of the air is known as atmospheric pressure. The D region extends up to 55 miles (90 kilometers) above the Earth’s surface. We use cookies to enhance your experience on our website, including to provide targeted advertising and track usage. Earth’s atmosphere  Earth’s atmosphere is a layer of gases surrounding the planet. A body is more likely to retain an atmosphere over time if gravity is high and the temperature of the atmosphere is low. 2 : the gas surrounding a heavenly body (as a planet) The atmosphere of Mars is made up mostly of carbon dioxide. These regions make up the homosphere. Many people also say that every sphere is essentially a geosphere because it is an integral part of the world. Only the Earth’s atmosphere will be dealt with in this article.  It burns incoming meteoroids. Near Earth’s surface, the atmosphere is about three-fourths nitrogen and one-fifth oxygen. The spheres are the geosphere, hydrosphere, atmosphere and biosphere. These include argon, carbon dioxide, neon, helium, hydrogen, and more. At sea level, air exerts a pressure of 14.7 pounds per square inch (101.36 kilopascals). 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. The atmosphere is the layer of gas that surrounds Earth. As you might expect from the name, the greenhouse effect works … like a greenhouse! 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.  The Earth is surrounded by a blanket of air, which we call the atmosphere. Earth’s atmosphere is similar to a jacket for our planet. This mass is equal to about one millionth of the mass of the Earth. The thermosphere extends up to 300 miles (480 kilometers) and is characterized by a rapid rise in temperature with increasing altitude. The four spheres are lithosphere, hydrosphere, atmosphere and biosphere. Sunlight enters the Earth's atmosphere, passing through the blanket of greenhouse gases. However, white light is composed of light waves of all the colors of the spectrum, each color having a different wavelength. Outer space is black because there is no atmosphere to scatter the light waves. What is it? Accessible across all of today's devices: phones, tablets, and desktops. Greenhouses are used to grow plants, such as tomatoes and tropical flowers.A greenhouse stays warm inside, even during the winter. Gravity keeps the gases from drifting off into space. Other planets, and some of their larger moons, also have atmospheres. As it passes through the atmosphere, sunlight is reflected and refracted by the air molecules and by dust particles and molecules of water vapor. If the Earth is compared to an orange, the atmosphere can be considered the skin of the orange. Atmosphere (Time-Life, 1983). and Day, J.A. Environmental scientists study things like the atmosphere, the oceans, geology, habitats, and ecology. Schaefer, V.J. At nighttime, it's colder outside, but the greenhouse stays pretty wa… Take a minute to check out all the enhancements! The realm comprising of water is known as hydrosphere. Gedzelman, S.D. The atmosphere, in turn, supplies ocean surfaces with the energy of motion that produces ocean currents. A literary technique, atmosphere is a type of feeling that readers get from a narrative, based on details such as setting, background, objects, and foreshadowing.A mood can serve as a vehicle for establishing atmosphere. The fourth layer, the thermosphere, ranges from about 50 to 300 miles (80 to 480 kilometers) above Earth. Air Pressure & Altitude; Atmosphere Physical Process. Take a minute to check out all the enhancements! We hope you and your family enjoy the NEW Britannica Kids. Atmosphere . The phenomenon of airglow, luminescence due to reradiation of sunlight by heated atmospheric particles, originates in this layer. This layer protects the Earth by absorbing harmful ultraviolet radiation from the Sun. Allen, O.E. Ultraviolet rays fill the exosphere, and faint glows called zodiacal light that are due to sunlight reflected from particles of meteoric dust originate in this layer. A Field Guide to the Atmosphere (Houghton, 1983). It is often called air. Scientists also divide the atmosphere into layers on the basis of electrical properties. The mesosphere—up to 40 miles (65 kilometers) above the Earth—is characterized by a rapid decrease in temperature with increasing altitude. The short blue light waves are more widely scattered and rescattered than are the long red waves. The atmosphere is the layer of gas that surrounds the earth, including the air that you breathe. It surrounds our planet, keeps us warm, gives us oxygen to breathe, and it is where our weather happens. Abbr. The Earth and other planets of the solar system are each enclosed in a thin shell of gas called an atmosphere. To re-enable the tools or to convert back to English, click "view original" on the Google Translate toolbar. They divide it into layers on the basis of varying temperature, varying electrical characteristics, and varying composition. The atmosphere is the air that plants and animals breathe to survive. The stratosphere includes the ozone layer. At 100,000 feet (30,480 meters), air density is so low that air exerts a pressure of only 0.18 pound per square inch (1.24 kilopascals). It extends up to about 6 miles (10 kilometers) above Earth’s surface. By continuing to use this site, you consent to the terms of our cookie policy, which can be found in our. Improved homework resources designed to support a variety of curriculum subjects and standards. After translating an article, all tools except font up/font down will be disabled. Large masses of air moving above the Earth’s surface can cause changes in weather and produce winds with speeds of over 100 miles per hour (160 kilometers per hour). We’ve been busy, working hard to bring you new features and an updated design. Search the meaning and definition of over one hundred thousand words! Definition of atmosphere in the Definitions.net dictionary. 3. 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 chemicals) inward, is greatest close to the surface. Its ionization varies greatly, and the layer disappears at night. (See also Earth, “The Atmosphere.”). The atmosphere serves to moderate the extremes of heat and cold on the Earth. Winds in this layer move mostly in a vertical motion. At sea level, air has a pressure of 14.7 pounds (6.7 kilograms) per square inch. Encyclopedic entry. The Atmosphere (Barron, 1989). Most of Earth’s weather, including the wind and most clouds, exists in the troposphere. The same safe and trusted content for explorers of all ages. The gases are held close to Earth by a force called gravity. Noctilucent clouds, clouds of water vapor or meteor dust that shine at night, are a distinguishable feature of this layer. Britannica does not review the converted text. 3 letter words The atmosphere is 500km thick. Beyond its outer boundary is the magnetosphere, a magnetic envelope that shelters the Earth from the ionized blast of the solar wind. The top of the troposphere layer of the atmosphere is called the tropopause. The atmosphere thins out as Earth's gravitational pull decreases. Atmos means “air.” The atmosphere includes all the gases surrounding the Earth. It is the region closest to the Earth’s surface and where weather occurs, and it is characterized by a decrease in temperature with increasing altitude. Many people use the term geosphere to describe lithosphere. The Sun’s rays that stream down to the Earth appear as white light. Definition of atmosphere noun in Oxford Advanced Learner's Dictionary. It reflects relatively long radio waves. Auroras are a spectacular feature of this layer. Choose a language from the menu above to view a computer-translated version of this page. We've arranged the synonyms in length order so that they are easier to find. The pressure is greatest at sea level. The atmosphere also protects the Earth’s inhabitants to some extent from meteor particles, cosmic rays, radiation from the Sun and stars, atmospheric dust, and other hazards. The air or climate in a specific place. An example of atmosphere is the creepy feeling one gets whenever they walk past the old, abandoned neighborhood house which is rumored to be haunted. Kids Definition of atmosphere. The F2 layer, above 150 miles and the densest of the ionospheric regions, consists mainly of strong nitrogen ions and reflects extremely short radio waves. The third layer is the mesosphere. The F1 layer lies between 100 and 150 miles (160 and 240 kilometers) above the Earth, consists mainly of oxygen atoms, and reflects shorter radio waves. We’ve been busy, working hard to bring you new features and an updated design. Maury, Jean-Pierre. All land or rocks and ground form the geosphere. 1 : the whole mass of air that surrounds the earth. ATMOSPHERE 'ATMOSPHERE' is a 10 letter word starting with A and ending with E Synonyms, crossword answers and other related words for ATMOSPHERE We hope that the following list of synonyms for the word atmosphere will help you to finish your crossword today. The Earth has an atmosphere made up of 5 layers, and the stratosphere is its second layer. A new, third level of content, designed specially to meet the advanced needs of the sophisticated scholar. Ozone blocks much of the Sun’s radiation that would harm plants and animals if it reached Earth. The troposphere extends up to 6 miles (10 kilometers) above the Earth’s surface. 2. Atmosphere Definition . Once absorbed, this energy is sent back into the atmosphere. Improved homework resources designed to support a variety of curriculum subjects and standards. 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. The atmosphere consists of several different gases. The atmosphere is the layer of gas that surrounds Earth. Lithosphere Definition for Kids. Above this is the heterosphere, where various constituents tend to separate out. The F region, also called the Appleton layer, is subdivided into F1 and F2 layers. A greenhouse is a building with glass walls and a glass roof. In the daytime, sunlight shines into the greenhouse and warms the plants and air inside. There, the gas particles are pressed together by the weight of the air above them. (For information about the atmospheres of the other planets see planet.). Meaning of atmosphere. That is wrong. The same safe and trusted content for explorers of all ages. 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