F summer trial words Flashcards

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1
Q

Orbital changes

A

Changes the pathway of the Earth around the sun

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2
Q

Quaternary period

A

The period of geological time from about 2.6 million years ago to the present. It is characterised by the appearance and development of humans and includes the Pleistocene and Holocene Epochs

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3
Q

Abrasion

A

Erosion caused by rocks and boulders in the base of the glacier acting like a giant file scratching and scraping the rocks below

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4
Q

Arête

A

A sharp, knife-like ridge formed between two corries cutting back by processes of erosion and freeze thaw.

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5
Q

Bulldozing

A

Ice pushes material of all shapes and sizes as it moves slowly forwards

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6
Q

Conservation

A

Managing the environment in order to preserve, protect or restore it

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7
Q

Corrie or (Cirque)

A

Armchair-shaped hollow in the mountainside formed by glacial erosion, rotational slip and freeze-thaw weathering.This is where the valley glacier begins. When the ice melts, it can leave a small circular lake called a tarn

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8
Q

Drumlin

A

A hill made of glacial till deposited by a moving glacier, usually elongated or oval in shape, with the longer axis parallel to the former direction of ice

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9
Q

Erratics

A

Rocks which have been transported and deposited by a glacier some distance from their source region

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10
Q

Freeze-thaw weathering or (Frost-shattering)

A

It occurs in cold climates when the temperatures are often around freezing point and where exposed rocks contain many cracks. Water enters the cracks during the warmer day and freezes during the colder night. As the water turns into ice it expands and exerts pressure on the surrounding rock, causing pieces to break off

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11
Q

Glacial trough

A

A river valley widened and deepened by erosive action of glaciers; it becomes ‘U’ shaped instead of the normal ‘V’ shape of a river valley

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12
Q

Hanging Valley

A

A tributary valley to the main glacier, too cold and high up for ice to be able to easily move. It therefore was not eroded as much as the lower main valley and today is often the site for a waterfall crashing several hundred metres to the main valley floor.

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13
Q

Land use Conflicts

A

Disagreements which arise when different users of the land do not agree on how it should be used

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14
Q

Moraine

A

Frost-shattered rock debris and materials eroded from the valley floor and sides, transported and deposited by glaciers

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15
Q

Outwash

A

Material, chiefly sand or gravel, deposited by meltwater streams in front of, and underneath, a glacier. The material is sorted and rounded by water action

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16
Q

Plucking

A

A type of erosion where meltwater in the glacier freezes onto rocks and as the ice moves forward it plucks or pulls out large pieces along the rock joints

17
Q

Pyramidal Peak

A

Where several corries cut back to meet at a central point, the mountain takes the form of a steep pyramid.

18
Q

Ribbon Lake

A

A long, narrow lake found in glaciated valleys formed in the locations where the glacier had more erosive power, eg in areas of softer rock, where the valley gradient temporarily steepened or a tributary glacier joined the main valley.

19
Q

Rotational Slip

A

This occurs when the ice moves in circular motion. This process can help to erode hollows in the landscape, and deepen hollows into bowl shapes.

20
Q

Till

A

An unsorted mixture of sand, clay and boulders carried by a glacier and deposited as ground moraine over a large area.

21
Q

Truncated Spur

A

A former river valley spur which has been sliced off by a valley glacier, forming cliff-like edges.

22
Q

Abiotic (2)

A

Relating to non-living things

23
Q

Biotic (2)

A

Relating to living things

24
Q

Consumer (2)

A

Creature that eats animals and/or plant matter

25
Q

Decomposer(2)

A

An organism such as bacterium or fungus, that breaks down dead tissue, which is then recycled by the environment

26
Q

Ecosystem(2)

A

A community of plants and animals that interact with each other and their physical environment

27
Q

Food Chain(2)

A

The connections between different organisms (plants and animals) that rely on one another as their source of food

28
Q

Food Web(2)

A

A complex hierarchy of plants and animals relying on each other for food.

29
Q

Nutrient Cycling(2)

A

A set of processes whereby organisms extract minerals necessary for growth from soil or water, before passing them through the food chain - and ultimately back to the soil and water.

30
Q

Global Ecosystem(2)

A

Very large ecological areas on the earth’s surface (or biomes), with fauna and flora (animals and plants) adapting to their environment. Examples include tropical rainforest and hot desert.

31
Q

Producer (2)

A

An organism or plant that is able to absorb energy from the sun through photosynthesis

32
Q

Biodiversity (3)

A

The variety of life in the world or a particular habitat

33
Q

Commercial farming(3)

A

Farming to sell produce for a profit to retailers or food processing companies

34
Q

Deforestation(3)

A

The chopping down and removal of trees to clear an area of forest

35
Q

Logging(3)

A

The business of cutting down trees and transporting the logs to sawmills

36
Q

Mineral Extraction(3)

A

The removal of solid mineral resources from the Earth. These resources include ores, which contain commercially valuable amounts of metals, such as iron and aluminium; precious stones, such as diamonds; building stones such as granite and solid fuels, such as coal and oil shale

37
Q

Soil Erosion(3)

A

Removal of topsoil faster than it can be replaced, due to the natural (water and wind action), animal, and human activity. Topsoil is the top layer of soil and is the most fertile because it contains the most organic, nutrient-rich materials

38
Q

Subsistence farming(3)

A

A type of agriculture producing food and materials for the benefit only of the farmer and his family