Weathering Flashcards

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Describe the characteristics of rock that has recently gone through freeze-thaw.
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Recently weathered rock can be seen at the foot of chalk and limestone cliffs and is easily identified because it is angular.

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Describe the characteristics of rock that has recently gone through freeze-thaw.
What is weathering?
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Weathering is the breakdown of rock in situ by the action of rainwater, extremes of temperature, and biological activity.

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What is weathering?
What is mechanical weathering?
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Mechanical weathering is the breakdown of rock without changing its chemical structure (composition).

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What is mechanical weathering?
What is salt weathering?
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Salt weathering is when salt spray from the sea gets into a crack in a rock. It may evaporate and crystallise, putting pressure on the surrounding rock and weakening the structure.

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What is salt weathering?
What is chemical weathering?
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Chemical weathering is the breakdown of rock through changing its chemical composition.

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What is chemical weathering?




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