Ice on Land Key Words

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  • Created by: Jinesha
  • Created on: 20-03-15 19:40
Fragile environment
An environment that is easily unbalanced and damaged by natural or human factors
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Accumulation
Inputs to the glacier budget, such as snowfall and avalanches
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Glacial trough
A wide, steel sided valley eroded by a glacier
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Responsible tourism
The idea of encouraging a balance between the demands of tourism and the need to protect the environment
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Medical moraine
A ridge of sediment running down the center of a glacier formed when two lateral moraines merge
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Terminal moraine
A high ridge running across the valley representing the maximum advance of a glacier
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Glacier
A finger of ice usually extending downhill from an icecap and occupying a valley
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Glacier budget
The balance between the inputs (accumulation) and the outputs (ablation) of a glacier
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Ice sheet
A large body of ice over 50,000 km squared in extent
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Interglacial
A period of ice retreat associated with rising temperatures (this is us now)
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Glacial period
A period of ice advance associated with falling temperatures
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Avalanche
A rapid downhill movement of a mass of snow, ice and rocks, usually in mountainous environment
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Ice cap
A smaller body of ice usually found in mountainous regions
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Sustainable management
A form of management that ensures that developments are long lasting and non-harmful to the environment
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Pyramidal Peak
A sharp edged mountain peak
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Snout
The front of a glacier
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Loose snow avalanche
A powdery avalanche usually originating from a singe point
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Ablation
Outputs from the glacier budget such as melting
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Bulldozing
The pushing of deposited sediment at the snout by the glacier as it advances
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Moraine
Sediment carried and deposited by the ice
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Hanging valley
A tributary glacial trough perched up on the side of a main valley, often marked by a waterfall
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Hummock
A small area of raised ground, rather like a large molehill
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Rotational slip
Slippage of ice along a curved surface
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Drumlin
An egg shaped hill found on the floor of a glacial trough
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Abrasion
A process of erosion involving the wearing away of the valley floor and sides (glaciers) and the shoreline (coastal zones)
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Plucking
A process of glacial erosion where individual rocks are plucked away from the valley floor or sides as the water freezes them to the glacier
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Slab avalanche
A large-scale avalanche formed when a slab of ice and snow breaks away from the main ice pack
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Ribbon lake
A long narrow lake at the bottom of a glacial trough
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Long Profile
This shows the changes in height and shape along the length of a glacier, from its source high in the mountains to its snout
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Arête
A knife-edged ridge, often formed between two corries
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Corrie
A deep depression on a hillside with a steep back wall, often containing a lake
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Truncated Spurs
An eroded interlocking spur characterized by having a very steep cliff
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Lateral moraine
A ridge of frost-shattered sediment running along the edge of a glacier where it meets the valley side
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El Nino effect
El Nino events are large climate disturbances which are rooted in the tropical Pacific Ocean, and occur every 3 to 7 years. They have a strong impact on the continents around the tropical Pacific, and some climatic influence on half of the planet.
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Other cards in this set

Card 2

Front

Inputs to the glacier budget, such as snowfall and avalanches

Back

Accumulation

Card 3

Front

A wide, steel sided valley eroded by a glacier

Back

Preview of the back of card 3

Card 4

Front

The idea of encouraging a balance between the demands of tourism and the need to protect the environment

Back

Preview of the back of card 4

Card 5

Front

A ridge of sediment running down the center of a glacier formed when two lateral moraines merge

Back

Preview of the back of card 5
View more cards

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