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Geography
Key Concepts
change- dynamic nature of all processes on Earth, whether slow or fast, small or large
environment- specific place of Earth and all the things, both animate and inanimate, that are there
interconnection- the relationship between all things, both living and non-living, and all processes, both natural and human.
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scale- the level at which geographical inquiry take place - personal, local, regional, national or global
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Year 7/8/9 revision
Oceans/ continents
Arctic, Atlantic, Southern, Pacific, Indian
Asia, Africa, Australasia, North America, South America, Europe.
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Ecosystem Services
sources - products that can be used or converted by humans for our use eg iron ore for manufacturing
sinks- processes in the natural environment that absorbs our waste eg bacteria in soil breaking down waste
services- things that are done for us by the natural environs that don't produce consumable resources eg fresh air from trees
spirituality- personal relationships that human beings have with the environment eg land connection - Aboriginals.
Degradation
Land
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soil erosion - soil wearing away through rivers, rain and wind. Clearing trees can cause wind erosion.
ecosystem decline - ecosystem eg streams & forests can be degraded though loss of vegetation or decline in amount of certain species. Can lead to desertification.
Atmosphere
air pollution - traffic exhaust and power plant emissions cause air quality to worsen. Millions of deaths occur directly as a result of this in Asia and Africa.
India's pollution - India is one of the most polluted countries in the world, more than half a million of then die prematurely each year. unsustainable industry has risen over the past few years.
recovering ozone layer- In 1987, international agreement banned use of chemicals that damage the ozone layer. It will return to 1980 level by 2070.
Water
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Pollutants in our water- caused by human activities eg shipping, oil drilling, drilling. People lose access to safe, clean drinking water.
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