Sunday, April 15, 2012

The Processes Of Erosion Exercise

Processes Of Erosion Exercise

Q: 1,2,4,5
1. What Is Erosion?
The process of eroding, chipping or taking away due to factors such as wind, water or other natural agents
2. Which wave type is most likely to erode? Why?
Destructive waves are more likely to erode due to the fact that destructive waves have a strong backwash that take away material from coastlines and other areas this leads to erosion
a. What are the differences between chemical and mechanical weathering?

b. What are the differences between hydraulic power and abrasion
Mechanical weathering leads to the breakdown of rock without any changes to the minerals inside the rock, this varies with weather. Chemical weathering happens when the rock’s chemical composition is changed leading to the disintegration of the rock

Hydraulic power is when the sheer power and weight of water crashing onto rock causes the rock to break and chip off. Abrasion is when waves pick up rocks and pebbles and when the waves hit the rock, the stones and pebbles cut into the rock causing the rock to chip and break away                                                                     
5. What are the factors that increase the speed of erosion?

The highest rate of erosion are recorded during storms when waves are at their most destructive.

Rock Condition
Rocks with faults, joints or other weak spots are more prone to erosion compared to massive blocks of rock

Rock Arrangement
Example a cliff with a weak base such as clay is more prone to erosion as they cannot withstand the force of the waves while a cliff with a sturdy base such as rock is less prone to erosion

The higher the frequency of weathering, the faster the rate of erosion

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