What is weathering?

Limestone bricks weathered by acidic rain
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The breakdown of rock without changing its chemical composition is known as what?

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Freeze-thaw weathering occurs when rocks are porous (contain holes) or permeable (allow water to pass through). Water enters the rock and freezes. By how much does the expand by, causing pressure on the rock until it cracks?

Evidence of freeze thaw weathering Internet Geography
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True or false? 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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Chemical weathering is the breakdown of rock through changing its chemical composition. When rainwater hits rock it decomposes it or eats it away. What is this process known as?

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True or false? Carbonation works best in warm conditions.

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What is hydrolysis?

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Weathering weakens cliffs and this then slows down rates of erosion.

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Weathering weakens cliffs and this then speeds up rates of erosion.

Weathering Quiz

Awesome, well done! You know your coastal weathering processes.

As Thor says, not bad at all. But, let's be honest, it's not brilliant. Give the quiz another go and don't forget to read up on this area by heading over to our coasts resources using the topics link at the top of the page.

You need to do some work on weathering. Take a look at our resources under Topics in the menu at the top of the page.

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