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.
After the cold front of a depression, what are conditions like? (include wind speed/direction, temperatures, precipitation, cloud cover)
Rain eases, cold, fewer clouds, NW wind, pressure rising.
What direction does an anticyclone rotate?
Clockwise.
How does living next to the sea affect the weather?
Summers are cooler and Winters are warmer than opposed to inland areas.
What the stages of stalactites and stalagmites?
A straw stalactite is formed, then a stumpy stalagmite is made on the cave floor and then they connect to create a rock pillar.
What is gas diffusion?
Water saturated with dissolved calcium carbonate enters through joints in the roof. As it does so, it loses some CO2 and helped by evaporation, this causes some calcite to form.
How is a limestone gorge/dry valley created?
Once the process of an underground cave nears completion, the roof of the cave becomes very thin and collapses increasing a hole in the landscape.
