glaciers 3 Flashcards
(19 cards)
Abrasion
Type of erosion caused by glaciers as they pick up sediment and rub them against rocks in a valley.
Conservation
Safeguarding against threats/pressure for development.
Crag and tail
A rocky outcrop with a tapering ridge of glacial deposits on one side.
Diurnal variations
The difference between a high temperature and a low temperature that occurs during the same day.
Drumlins
Egg-shaped hills found on the floor of a glaciated valley that gives an indication of ice movement.
Glacial transport
Weathered rocks and sediment are moved within or in the base of the glacier.
Glacial troughs
Also known as U-shaped valleys, steep-sided, wide and flat-bottomed valleys formed by glacial erosion.
Ground moraine
Rock material (sediment) transported and deposited by glaciers.
Hanging valleys
A tributary valley, high above the main valley floor, with a waterfall.
Karst limestone
A limestone rock that is easily dissolved by chemical weathering forming features such as caves and sinkholes.
Plucking
Glacial erosion where individual rocks are pulled away from the valley floor or sides by ice flow.
Recreation
How people use their leisure time including tourist activities such as mountaineering and rock climbing.
Relict upland glacial landscape
A landscape that has survived from an earlier period.
Renewable energy
A natural source of power that will never run out.
Roche moutonnees
A small hill of resistant rock exposed by ice movement.
Soil movement
The downslope movement of soil under the influence of gravity e.g. slumping.
Terminal moraine
A high ridge running across the valley representing the maximum advance of a glacier.
Tourism
Spending time away from home for pleasure and recreation.
Truncated spurs
A higher area on the straight rocky side of a glaciated valley (previously an interlocking spur).
