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CH2 L1 AR Questions

CH 2 L1 AR Questions Review

QuestionAnswer
How does weathering break down or change rock? Weathering breaks down rock into smaller pieces and can also change its chemical make up.
What is the result of a rock undergoing mechanical weathering? The result of mechanical weathering of a rock is that it will naturally break into smaller pieces, however it does not change the chemical make up of the rock.
Why is the surface area of a rock important? Surface area of a rock is important because having an increased surface area means that weathering has a greater effect on soil with smaller particles. It also increases the rate of chemical weathering.
How does ice break apart rocks? Water enters the cracks in rocks. Water expands as it freezes. This expansion widens the cracks.
Name 4 things that cause abrasion. strong current in a stream, glaciers, wind, and waves
What can cause rocks to become weaker? Roots absorb minerals from the rocks making them weaker.
How does chemical weathering differ from mechanical weathering? Mechanical weathering breaks down rocks into smaller pieces, but the type of rock does not change. Chemical weathering causes changes in the chemical make up of the rock.
How does chemical weathering change rock? Chemical weathering changes the composition and the identity of the rock.
Why is weathering slow in cold, dry places? The rate of weathering depends on the temperature and the amount of moisture present. Cold and dry places do not have the water and temperature changes that promote quick mechanical weathering.
How can animals cause weathering? Animals can burrow or dig holes breaking down rocks as they dig. Animals that live in the soil create holes where water enters thus causing weathering.
Created by: kfoulks
 

 



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