Stats: Glaciation quiz

General Stats

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The average score is 12 of 89

Answer Stats

Hint	Answer	% Correct
When debris carried by the glacier scapes the floor leaving striations	Abrasion	100%
A narrow, steep sided ridge. When two glaciers flow into parallel valleys	Arête	50%
When an ice sheets extend out breaks up to form ice bergs	Calving	50%
Forms in hollow where snow collects and basil slip, plucking + abrasion occur. When ice is thick enough it flows over. Freeze thaw weathering and plucking steepen back	Corrie	50%
The frozen part of Earths hydrological system	Cryosphere	50%
Oval shaped hills made of glacial till aligned in direction of flow, occur in large clusters - formation a mystery!	Drumlin	50%
Glacier transported rock fragment that differs from local bedrock	Erratic	50%
Long, winding ridges of sand and gravel. Stratified and run in same directional of glacier. Deposited by meltwater in sub glacial tunnels	Esker	50%
Formed by tributary glaciers and have water falls flow over them	Hanging valley	50%
Stratified mounds of sorted sand and gravel on valley floor near snout	Kame	50%
When lateral moraines of 2 merging glaciers converge - ridge of material in centre, found in lines parallel to ice flow	Medial moraine	50%
Generic term for landforms associated with deposition of till from within - poorly sorted and angular	Moraine	50%
Pro-glacial, layer of gravel, sand and clay that forms in front of where the snout used to be. Meltwater slows out carrying sediment in it	Outwash plain / sandur	50%
A layer of soil, sediment or rock below the surface that is permanently frozen	Permafrost	50%
When ice meets rock it melts slightly and refreezes. When glacier moves the rocked is plucked	Plucking	50%
Form in front of glaciers when terminal moraines dam the flow of meltwater streams	Pro-glacial lake	50%
A pointed mountain with at least 3 sides when 3+ corries form back to back	Pyramidal peak	50%
Found in lines behind terminal moraine, when retreating glaciers experience stability	Recessional moraine	50%
Long, narrow lakes found in glacial troughs - where soft rock eroded or terminal moraines	Ribbon lake	50%
When a solid turns to a gas with no liquid stage	Sublimation	50%
Corrie lake	Tarn	50%
Builds up at furtherest point of advancing glacier	Terminal moraine	50%
Formed when main glacier chops off the ridges of land that stick out into the main valley - erodes spurs using plucking and abrasion	Truncated spur	50%
Deposited at snout where ablation occurs, angular debris a glacier drops as it melts	Ablation till	0%
Strong winds break loose till and weaken features, fine material is carried and deposited in glacial areas	Aeolian / wind erosion	0%
Ridges of land	A spur	0%
When meltwater lubricates the base of the ice causing movement	Basil slip	0%
Irregular chips in the rock, occur on hard, brittle rocks as boulder is rolled along glacier floor - show direction of glacier	Chattermarks	0%
Conical hill w core of ice, continuous permafrost. No lake=permafrost advances and water collects and freezes. Lake=unfrozen under lake	Closed Pingo	0%
There is permafrost between talik and water	Closed talik	0%
Decreased gradient means higher pressure so ice fractures into layers and crevasses are closed	Compressional flow	0%
Where 90% of the ground is frozen and temp is below -5 degrees	Continuous permafrost	0%
When water in Corrie melts	Corrie lake	0%
Larger body of resistant rock with hard vertical upside which resists erosion and slows glacier = smooth downside as softer rock protected	Crag and tail	0%
Sheer weight of ice exerts pressure on bedrock causing it to shatter	Crushing	0%
Occurs when bedrock is partially soft and pressure of glacier picks up a whole layer and repositions it in a deformed shape	Deformation	0%
Sediment deposited on the ice when meltwater streams flowing into pro-glacial lakes slow down	Delta	0%
Where any product is removed	Denudational process	0%
	Dilation	0%
Fragmented layer of permafrost where 50-90% of ground area is frozen and it has been below 0 degrees for 2 years	Discontinuous permafrost	0%
When a system has no overall change despite variations	Dynamic equilibrium	0%
When rock debris is picked up and merged into a glacier	Entrainment	0%
Increased gradient means ice flows faster making the ice more stretched creating crevasses	Extensional flow	0%
Erosion or deposition caused by meltwater from glaciers	Fluvioglacial	0%
Sheer weight of moving ice as it passes over bedrock causes it to fracture leading to basil melting and freezing	Fracture and traction	0%
Water under the rocks or ground freezes and expands which forces the mass upwards	Frost heave	0%
When warm based glaciers become very lubricated so moves a lot faster	Glacial surge	0%
Steep-sided valleys with flat bottoms	Glacial trough	0%
Sediment transported beneath and smeared over underlying bedrock	Ground moraine	0%
Steep slopes with deep enclosed depressions and meltwater channels - results from thinning of ice as blocks of ice may squeeze debris realised from ice into crevasses	Hummocky moraine!!!	0%
Smaller masses of ice that are often associated with mountain ranges less than 50,000km	Ice caps	0%
Large series of inter-connected valley glaciers less than 50,000km	Ice fields	0%
Vast expanses of ice over 1km thick	Ice sheets	0%
When ice sheets extend out to sea	Ice shelves	0%
In permafrost soil, low temps cause the ground to contract which leads to cracks in the permafrost. Temp increases and active layer thaws. The water freezes and expands the cracks	Ice wedges	0%
Orientation of rocks, shows power of stream if perpendicular	Imbrication	0%
Where ice crystals slip and slide over each other	Inter-granular flow	0%
When ice bends and warps to flow downhill like a liquid	Internal deformation	0%
When individual crystals become fractured due to intense stress within the ice	Intra-granular flow	0%
Less than 10% frozen	Isolated permafrost	0%
Piles of deposit left by valley walls, laid down by steams occupying the trough between the ice and valley side. Narrow and flat topped, in sorted layers	Kame terrace	0%
Pro-glacial, blocks of ice left behind by glacier are covered my deposition from meltwater. Ice melts and leaves a depression - often filled with water	Kettle hole	0%
Landscapes that are scoured with hills of harder rock and small lakes where soft rock was	Knock and lochan	0%
Formed where sides of the glacier were (freeze-thaw weathering), show path, extent and speed	Lateral moraine	0%
When subglacial material becomes lodged against bedrock, glacier cannot overcome the friction so material remains	Lodgement	0%
Moving glaciers spread this onto valley beneath the ice - rounded material of varying size	Lodgement till	0%
Large area filled with wind blown sediment. Strong winds blow eroded slit material across a plateau. Improves soil	Loess field	0%
Pro-glacial, meltwater steams form them through erosion	Meltwater channel	0%
Crossing outlast plains are braided where variations in volume of meltwater leads to streams becoming choked with coarse material	Meltwater streams	0%
Hole in the surface of the ice	Moulin	0%
Processes of snow turning to ice causing erosion	Nivation	0%
Snow gathers in a small depression and erodes it into a hollow	Nivation hollow	0%
High peaks that rises above ice fields	Nunatak	0%
Conical hill with core of ice, discontinuous permafrost. Ground water is forced up through gaps in permafrost and freezes = ice lens	Open Pingo	0%
There is not permafrost between talik and the lake	Open talik	0%
Where stones are arranged on permafrost surface in circles, polygons or strips. This is cause by frost contraction where ground cracks and fills with stones. Then frost heave occurs which forces stones up and then they roll down mounds formed	Patterned ground	0%
Small ridges produces by minor advances in subaqueous settings	Push moraine	0%
More rocks on valley floor = more pressure = more melting, refreezes after obstacle as less pressure	Regulation creep	0%
Resistant masses of rock with smooth upside due to abrasion and rough steep downside due to plucking	Roche moutonnées	0%
Glaciers move in an arc shape when they move out of a hollow, more weight = more pressure	Rotational slip	0%
When ice sheets and glacier expand out of the valley and erode large areas of lower relief land	Scouring	0%
Permafrost is impermeable so when the active layer melts, the meltwater cannot drain away so soil becomes waterlogged and heavy. The soil will flow easily, especially on a gradient	Solifluction	0%
Where 10-50% of ground area is frozen and- patches as it relies on micro climatic conditions	Sporadic permafrost	0%
Arranged into layers, fluvioglacial deposits are	Stratification	0%
Linear, fine scratches formed by abrasion	Striation	0%
Thawed permafrost	Talik	0%
When snow melts and retains heat due to dark surface - thaws permafrost	Thaw lake	0%
When large section of glacier detaches and melts - suspended bedrock is deposited and form large plain of unsorted till	Till plain	0%
Distinct layer of silt lying on top of a layer of sand, deposited annually in lakes near glacial margins. Thicker = more melting	Varve	0%

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Glaciation quiz - Statistics