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Year 7 Geo Sem 2

Revision terminology

TermDefinition
spatial distribution where things are
humidity water vapour in the air
two types of deserts are hot deserts and cold deserts.
windward on the side of a mountain range closest to the ocean
leeward on the side of a mountain range facing away from the ocean
rainshadow where one side of a mountain receives limited rain
diurnal range the difference between the highest and lowest temperatures in one day
insulation cloud cover, which acts like a blanket to trap heat in the atmosphere
runoff precipitation that flows over the ground
infiltration the movement of water into the soil from the surface
barren unproductive, dry land
deposition landforms resulting from weathered and eroded material coming to rest or being deposited
stony plains (Gibber plains) form when small stones and rocks are left behind after loose material has blown away
Mushroom rock Sand-blasting occurs when sand is picked up by the wind and thrown against rocks.After many years the rock surfaces begin to wear away, forming unique shapes
wadi dry water course
turbulent fast moving in a disorderly way
Alluvial fans The streams carry heavy loads of sand and rock fragments and tend to 'spray' their loads out in a fan-like way
Playa lakes When the land surface is very flat and low, rainwater often collects in holes to form these
weathering the breaking up of rock material into smaller pieces by exposure to the weather
shield desert a ______ desert is a mixture of sand and gravel
xerophytic in plants, able to adapt to long dry periods
photosynthesis the process by which green plants make carbohydrates from carbon dioxide and water and give off oxygen
ephemerals plants that have short life cycles
nocturnal coming out of burrows to hunt at night, rather than risking the heat and sun of the day.
salinity an increase in the amount of salt in the soil and water supply
ecological sustainability the ability to meet the needs of the present generation without compromising the ability of future generations to meet their needs
desertification spreading of the desert conditions to areasoutside existing deserts
nomad a person continually moving in search of pasture and water
malnutrition the condition of being poorly nourished
ecosystem the plants and animals that exist in a particular environment, each of which is dependent on the other parts
local relief the difference in height between the highest and lowest points in a particular area
hachures markings on a map that show high areas
tectonic plates large moving areas of the Earth’s surface
earthquake a sudden movement of the Earth’s surface along a fault line
fault line a weak line or crack in the Earth’s surface that can move
rift valley a depression or low area caused by faults forcing the Earth’s surface downwards
block mountain the layers of rock on one side of a fault line are forced up forming this type of mountain
volcanoes form around a weak spot i n the earth's surface, magma erupts
fold mountains Earth’s crust is forced up and buckles and bends, forming _____ mountains
dormant not currently active volcanoe but could become so at any time
extinct in terms of volcanoes, unlikely to erupt again
active ____volcanoes across the globe, threatening to erupt at any time.
weathering the breaking up of rock material into smaller pieces by exposure to the weather
erosion the process by which the surface of the Earth is worn away by agents such as wind and water
glacier these form U shaped valleys
ecological sustainability the ability to meet the needs of the present generation without compromising the ability of future generations to meet their needs
rivers these form V shaped valleys
Created by: julie.greacen