3 Flashcards
What is the Traction
the action of drawing or pulling something over a surface, especially a road or track.
What is Saltation
the transport of hard particles over an uneven surface in a turbulent flow of air or water.
What is suspension
material is carried along in the water.
Hydraulic power
Waves crash against rock and compress the air in the cracks. This puts pressure on the rock. Repeated compression widens the cracks and makes bits of rock break off.
Abrasion
Eroded particles in the water scrape and rub against rock, removing small pieces.
Attrition
Eroded particles in the water smash into each other and break into smaller fragments. Their edges also get rounded off as the6 rub together
Solution
Acids contained in sea water will dissolve some types of rock such as chalk or limestone.
Hard rock
Are resistant to weathering erosion so a coastline made of granite (e.g., Land’s End) will change slowly.
Soft rock
Are more susceptible to weathering erosion so a coastline made of chalk (e.g., Dorset) will change relatively quickly.
Destructive Wave
~They tend to erode the coast.
~They have a stronger backwash than swash.
~They have a short wave length and are high and steep.
Constructive
They break on the shore and deposit material, building up beaches.
They have a swash that is stronger than the backwash.
They have a long wavelength, and are low in height.
Biological waethering
Weakening of rock by plants, animals and microbes.
Chemical weathering
The erosion of rocks, building materials, etc., caused by chemical reactions (chiefly with water and substances dissolved in it) rather than by mechanical processes.k