Test Revision Flashcards
What is Solution?
When the water in the river dissolves minerals from the rocks and washes them away.
What hydraulic action?
This is when the river banks and bed are eroded by the sheer force of the water flowing past.
What is Corrasion?
When the river bank is eroded by what the river is carrying. These act like sandpaper, scraping and smoothing the banks as they move past.
What is attrition?
This is larger rocks bounce along the river bed battering and eroding as they go.
What is Traction? (transport)
Rolling stones along the river bed. (needs lots of energy)
What is suspension? (transportation)
Clay sized particles are carried by the river flow.
What is saltation?
Sand sized particles bounce along the riverbed.
What is solution?
Some minerals are dissolved by the river and carried along.
What name is given to the chemical weathering of limestone?
Carbonation.
How is a levee formed?
When a river overflows and over it’s banks, the flow slows down and deposits it’s load on the banks. Successive floods can cause the levee to become bigger.
What is the name given to a front of air that has mixed?
An Occluded front.
In the cold air sector of a depression, what are conditions like? (include wind speed/direction, temperatures, precipitation, cloud cover)
Pressure falling, dry, a few high clouds, increasing wind.
At the warm front of a depression, what are conditions like? (include wind speed/direction, temperatures, precipitation, cloud cover)
Steady rain, becoming warm, lower thicker clouds, pressure falling.
In the warm sector of a depression, what are conditions like? (include wind speed/direction, temperatures, precipitation, cloud cover)
Rain turns to drizzle, warm, sky clears, opposing wind, pressure leveling off.
At the cold front of a depression, what are conditions like? (include wind speed/direction, temperatures, precipitation, cloud cover)
Heavy rain, becoming cold, large clouds building up.
