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Definition: weathering from Dictionary of Energy

Earth Science. the natural processes by which the actions of atmospheric and other environmental agents, such as wind, rain, and temperature changes, result in the physical disintegration and chemical decomposition of rocks and earth materials in place, with little or no transport of the loosened or altered material.


weathering

From Philip's Encyclopedia
Breakdown and chemical disintegration of rocks and minerals at the Earth's surface by physical and chemical processes. In physical weathering in cold, wet climates, water seeping into cracks in the rock expands on freezing, so causing the rock to crack further and to crumble. Extreme temperature changes in drier regions, such as deserts, also cause rocks to fragment. Chemical weathering can lead to a weakening of the rock structure by altering the minerals of a rock and changing their size, volume, and ability to hold shape. Unlike erosion , weathering does not involve transportation. …
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Full text Article weather

From The Columbia Encyclopedia
state of the atmosphere at a given time and place with regard to temperature, air pressure (see barometer ), wind, humidity, cloudiness, and precipitation. The term weather is restricted to conditions over short periods of time; conditions over long periods, generally at least 30–50 years, are…
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Full text Article weather

From The Hutchinson Unabridged Encyclopedia with Atlas and Weather Guide
Variation of atmospheric conditions at any one place over a short period of time. Such conditions include humidity, precipitation, temperature, cloud cover, visibility, and wind. Weather differs from climate in that the latter is a composite of the average weather conditions of a locality or region…
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Full text Article WEATHER

From Gaither's Dictionary of Scientific Quotations
A remark about the weather is like the move P to K4 in chess; it has become the established way of beginning a conversation and it holds its ground for the same reason, that no better opening has been discovered. Talk About the Weather The Independent, Volume 75 , Number 3372 , July 17, 1913 (p. 126…
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Full text Article weather

From The Macquarie Dictionary
the state of the atmosphere with respect to wind, temperature, cloudiness, moisture, pressure, etc. Plural: weathers windy or stormy weather. Plural: weathers verb (t) /'w8q7/ /'wedhuh/ to expose to the weather; to dry, season, or otherwise affect by exposure to the air or atmosphere. weathers, …
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Full text Article weather

From The Chambers Dictionary
atmospheric conditions in terms of heat or cold, wetness, cloudiness, etc; type of atmospheric conditions; vicissitude of fortune; formerly, a storm or adverse weather; the direction in which the wind is blowing ( naut ); the angle the sail of a windmill makes with the perpendicular to its axis. vt…
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Full text Article weather

From The American Heritage(R) Dictionary of the English Language
The state of the atmosphere at a given time and place, with respect to variables such as temperature, moisture, wind velocity, and barometric pressure. a. Adverse or destructive atmospheric conditions, such as high winds or heavy rain: encountered weather five miles out to sea. b. The unpleasant or…
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Full text Article Weather

From Brewer's Dictionary of Phrase and Fable
By a papal enactment made in the middle of the 9th century, the figure of a cock was set up on every church steeple as the emblem of St peter . The emblem is in allusion to his denial of Christ three times before the cock crew twice. On the second crowing of the cock the warning of Jesus flashed…
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Full text Article weathering

From Philip's Encyclopedia
Weathering is the breakdown of rock in situ. It...
Breakdown and chemical disintegration of rocks and minerals at the Earth's surface by physical and chemical processes. In physical weathering in cold, wet climates, water seeping into cracks in the rock expands on freezing, so causing the rock to crack further and to crumble. Extreme temperature…
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Full text Article weather

From Collins English Dictionary
n 1 a the day-to-day meteorological conditions, esp temperature, cloudiness, and rainfall, affecting a specific place Compare climate (sense 1) b ( modifier ) relating to the forecasting of weather: a weather ship 2 a prevailing state or condition 3 make heavy weather a (of a vessel) to roll and…
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Full text Article THE WEATHER

From Collins Dictionary of Quotations
What dreadful hot weather we have! It keeps me in a continual state of inelegance. [Letter, 1796] He who doesn’t notice whether it is winter or summer is happy. I think that if I were in Moscow, I wouldn’t notice what the weather was like. CHEKHOV, Anton The Three Sisters (1901). Snowy, Flowy, …
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