36100621
Description
Flashcards by Dylan Hardy, updated more than 1 year ago
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Created by Dylan Hardy
about 2 years ago
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| Question | Answer |
| What is freeze thaw weathering | When water seeps into the cracks and it expands and the cracks get bigger |
| What is oxidation | the breakdown of rock by oxygen and water, often giving iron-rich rocks a rusty-coloured weathered surface. |
| What do destructive waves have | weak swash and strong backwash |
| What do constructive waves have ? | They have a strong swash and weak backwash |
| Describe how a stump is formed ? | Firstly part off the headland is eroded and then freeze thaw weathering erodes the top to make the Arch clapse |
| What is longshore drift | the movement of material along a coast by waves which approach at an angle to the shore but recede directly away from it. |
| What are 3 examples off mass movement | Rockfall,landslide,slumping |
| How does a sand dune form? | Wind would blow sand and it would get caught on a object and it would build up |
| What are the advantages off soft engineering methods | There are cheaper and look natural |
| What are advantages off hard engineering | They last longer and are stronger than soft |
| What are the disadvantages off soft engineering | They need to be replaced frequently and take a lot off time |
| What is a disadvantage off hard engineering | They look unnatural and therefore there will be less tourists |
| What is salitation | Small rocks or pebbles which are too big to be carried within the water are transported and bounce along the bottom of the river |
| What is oxidation | the breakdown of rock by oxygen and water, often giving iron-rich rocks a rusty-coloured weathered surface. |
| How is a spit formed | Spits are formed where the prevailing wind blows at an angle to the coastline, resulting in longshore drift |
| How does deposition occur | When the sea loses some energy it drops objects |
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