Geography flashcards topic 2
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- Created by: Jessica8
- Created on: 09-12-17 18:36
aquifer
an underground store of water formed when water-bearing {permeable} rocks lie on top of an impermeable rock
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climate
the average weather conditions of an area occurring over many {30+} years
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Coriolis effect
the deflection of air movement by the Earth's rotation
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crop yield
the amount of crops produced from an area
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deforestation
permanently removing forest so the land can be used for something else
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drought
an extended period of lower than normal rainfall/ precipitation, causing water shortages
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enhanced greenhouse effect
the trapping of heat radiation around the Earth by excess greenhouse gases produced through human activity
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evaporation
the process of changing liquid water to gaseous water {water vapour}
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eye
the centre of a tropical cyclone; an area of clear conditions created by air converging at the centre of the storm and then sinking
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eye wall
a thick bank of cloud around the eye with high wind speeds and heavy rain
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Ferrel cell
circulation cell that brings warm air towards the UK
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frontal rainfall
a front is the boundary between air masses. if moist air rises along the front, as the air cools clouds form and rain may fall
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glacial
a period of time with lower average temperatures causing widespread glaciation
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glacier
a body of land-based ice that moves under its own weight due to gravity
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groundwater
water stored underground in rocks and soil
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growth rings
a layer of wood created each year by a tree as it grows. the size of the ring is related to the climate conditions when it was formed
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Hadley cell
a circulation cell near the equator responsible for storms at the equator and desert belts north and south of the equator
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ice core
a section of ice drilled from a glacier showing the layers of ice created over time
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interglacial
a period of time between glaciations with higher average temperatures
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jet streams
a fast-moving current of air in the upper atmosphere
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NGO
a non-governmental organisation
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period
a large section of geological time
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photosynthesis
the chemical processes in plants where water, carbon dioxide and sunlight are used to produce glucose
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Polar cell
a circulation cell furthest from the equator that brings cold air south towards the UK
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precipitaion
water vapour condensed in the atmosphere which falls as rain, snow, sleet or hail
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Quaternary period
the current period of geological time
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relief
the height and shape of the land
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reservoir
a large lake, usually artificial, used to store water
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saturation
soil becomes saturated when it has absorbed as much water as it possible to do so. if any more water is added, it is not able to be absorbed
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seasons
annually recurring periods during the year, or specific periods when events occur, e.g. when tropical cyclones are most likely to form. the timings of seasons vary between the Northern and Southern Hemispheres
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storm surges
an increase in the height of the sea due to a storm
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subsidence
the collapse of land because of a lock of support underneath, often caused by a reduction in water levels
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thermal expansion
the increase in volume created when a fluid {e.g. seawater} is heated and expands
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track
the path followed by a tropical cyclone
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transpiration
the release of water vapour through plant's leaves
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weather
the day-to-day conditions of the atmosphere e.g. temperature, precipitation, cloud cover etc
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wildfire
a fire in an open area of vegetation caused by a combination of very dry weather and a spark from a natural or artificial source
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Other cards in this set
Card 2
Front
climate
Back
the average weather conditions of an area occurring over many {30+} years
Card 3
Front
Coriolis effect
Back
Card 4
Front
crop yield
Back
Card 5
Front
deforestation
Back
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