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Year 7 Geo Sem 2
Revision terminology
| Term | Definition |
|---|---|
| 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
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