till		water enters rock, refreezes and expands and breaks off more rock
abrasion		sediment ramp resulting from an ice sheet
cirque		sediments deposited by glaciers
Greenland		sharp pyramid-like peaks project above surroundings
basalslip		example of an ice sheet
icesheets		lowest elevation in an area that remains covered in snow
drumlin		glacier acts like sandpaper
aretes		snake-like ridges made of sand and gravel deposited by streams once flowing in tunnels under glaciers
accumulation		glacial drift that is sorted by weight and size
valleyglaciers		ice masses that slowly advance down valleys
glacialbudget		thick ice mass that forms over a long period of time
stratifieddrift		bowl shaped depression, surrounded on 3 sides by steep rock walls
glacial drift		this is due to gravity, entire mass slides downhill
iceage		period of time when much of Earth's land is covered in glaciers
glacialflow		balance or lack or accumulation at upper end or wastage at lower end
outwashplains		zone of the glacier which loses ice to melting
calving		U-shaped valley
moraine		a type of glacial flow in which the movement is within the ice
kettle		large pieces of glaciers break off
wastage		enormous ice masses that flow in all directions
plasticflow		streamlined hills composed of till
erosion		snaking, sharp -edged ridges
glacialtrough		material deposited directly by a glacier as it melts
plucking		zone at the head of the glacier
esker		movement of glaciers
snowline		small lakes within a depression
horn		layers or ridges left when glaciers melt
glacier		glaciers are a dynamic agent of this