Geography GCSE paper1
Define weathering
Breaking down of sediment in situ
define erosion
breaking down an transporting of sediment
define transportation
the movement of sediment
define biological weathering
Sediment broken down by living organisms
define chemichal weathering
Sediment broken down by rain or acidity
define mechanichal weathering
Sediment broken down by water going into cracks and freezing over nightand expands. In the morning the ice melts.
define hydraulic action
water goes into cracks and forces the air out
define abrasion
rocks scrape each other away
define attrition
Rocks hit each other chipping each other away slowly
define solution
water hits rocks and the acidity dissolves minerals
what is traction in transportation
Boulders rolling along the river bed
what is saltation in transportation
pebbles bouncing along the river bed
what is suspension in transportation
silt flowing in water
what is solution
dissolved oarticles flow in the river
define mass movement
cliffs slumping down due to gravity and erosion
define deposition
sediment changed in postions
what is an upland area
land higher than 600m in elevation
what is a lowland area
land less than 200m in elevation
what is a midland area
land between 200m-600m in elevation
what formed most of the upland areas in the UK?
An ice sheet that covered the uk during the last ice age 10,000 years ago
define ice age
period of time when the temperature was lower than average and allowed ice to form in the north parts of the world
what was the name of the ice sheet that covered the uk
the holocene
how many diffrent winds does th euk has coming to it
5
what is a maritime wind
wind that goes through the sea or ocean
what is continental wind
wind that goes through land
what are the names of the winds coming to the uk
polar maritime, arctic maritime, polar continental, tropical maritime, tropican continental
what weather does polar maritime wind bring
wet and cold
what weather does the arctic maritime wind bring
wet and cold
what weather does the polar continental bring
cold in winter, hot in summer
what weather does the tropical maritime wind bring
hot and dry
what weather does the tropical continental wind bring
warm and moist
how are waterfalls formed
when a river flows overbands of rock which vary in their resistance to erosion. Areas of softer rock get eroded quicker and it creates a steep gradient of soft and hard rock. As the soft rock continues to be eroded an overhang of hard rock is created. a deep plunge pool is then formed at the base of the waterfall due to turbulant water.
how are gorges formed
when a waterfall retreats upwards because the overhang collapses.