glacial processes

Question 1

weathering processes

Answer 1

freeze thaw- water freeze in cracks and freezes

Question 2

more weathering processes

Answer 2

rocks weaken and become easier to be eroded, large angular rocks collect at bottom of mountain which erode when trapped under moving glaciers

Question 3

erosion processes

Answer 3

abrasion- sandpapering effect as weight of ice scours valley floor leaving smooth surface
plucking- meltwater beneath glacier freezes and bonds base of glacier to rocky surface. glacier moves so loose fragments get plucked away. leaving no rocky surgace

Question 4

transportation processes

Answer 4

rock fragments from freeze thaw are transported by glacier
sediment/ moraine transported on in or below ice
bulldozing- glaciers push debris dwpnhill

Question 5

depositional processes

Answer 5

as glacier retreats it leaves a bed of broken rock/ till which is poorly sorted due to lack of water
meltwater rivers carry sediment away. attrition makes rocks smaller sediment is well sorted

Question 6

glacier movement

Answer 6

meltwater lubricates glacier enabling it to slide - basal slip is sudden in summer
Rotational slip- ice moves along curved surface to enlarge and develop hollows
In winter glacier freeze to rocky surface and weight and gravity cause crystals to change shape
Internal deformation- glaciers slowly move downhill