Air show 2019. Sep 12, 2025 · Air, mixture of gases comprising the Earth’s atmosphere. It has mass and weight, because it is matter. Air is a mixture of many gases and tiny dust particles. . Pure air is completely invisible and odourless, however pollutants in the air can cause it to have a coloured tinge or odour. Air also contains a significant amount of human-made air pollutants, including some that are not safe to breathe and some that are causing the climate to warm. It has an indefinite shape and volume. We usually model air as a uniform (no variation or fluctuation) gas with properties that are averaged from all the individual components. The meaning of AIR is the mixture of invisible odorless tasteless gases (such as nitrogen and oxygen) that surrounds the earth; also : the equivalent mix of gases on another celestial object (such as a planet). It is the clear gas in which living things live and breathe. The mixture contains a group of gases of nearly constant concentrations and a group with concentrations that are variable in both space and time. Sep 12, 2025 · Air, mixture of gases comprising the Earth’s atmosphere. Jan 21, 2023 · Air is a mixture of gases, 78% nitrogen and 21% oxygen with traces of water vapor, carbon dioxide, argon, and various other components. Real-life example: Airplanes and helicopters are designed to fly in the air, meaning the empty space over the ground. AIR definition: 1. Air contains important substances, such as oxygen and nitrogen, that most species need to survive. The terms air or the air is used generally to refer to the sky or open space outside. There is no air in outer space. the mixture of gases that surrounds the earth and that we breathe: 2. Several other compounds are also present in our air in trace amounts. the space above the…. Jul 29, 2024 · Nearly all of Earth's atmosphere (air) is comprised of a mere five gases: nitrogen, oxygen, water vapor, argon, and carbon dioxide. Air is a mixture of several gases that is a precious resource and a necessity of life. Oct 1, 2024 · Air is the invisible mixture of gases that surrounds Earth. Air is a mixture of gases, most of which are naturally occurring. Learn more. The weight of air creates atmospheric pressure. hsy qsx moao jhj tvhed oez 0heoj6 qvj20a g7n2sqf doyfs