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Copy of Demonstrate Geographic Understanding of the Sustainable Use of an Environment - Waitomo Caves
Transcript of Copy of Demonstrate Geographic Understanding of the Sustainable Use of an Environment - Waitomo Caves
2. fully explaining the consequences of the use of Waitomo Caves on people and the caves themself
3. fully explaining the sustainability, or otherwise, of the selected environment with continued use Geographic understanding refers to an understanding of the spatial dimension of the environment, and an understanding of how people interact with environments and the consequences of that interaction.
Environment refers to a part of the earth’s surface characterised by a specific use.
Use of an environment refers to using it for a purpose such as mining, farming, fishing, tourism, energy production, recreation, forestry, transportation.
Sustainable use refers to the extent to which this use can be maintained in the future to minimise environmental impacts. This unit incorporates concepts, knowledge and understanding from the closely related domains of geography, environmental science and environmental management... So what are the Waitomo Caves? Waitomo;
The word Waitomo comes from the Māori language wai meaning water and tomo meaning a doline or sinkhole; it can thus be translated to be water passing through a hole. The Waitomo Caves are believed to be over two million years old So, scientifically speaking... they are known as "Karst" systems
'Karst' describes a landscape that has poor surface drainage and well developed sub surface drainage
About 10% of the earth's land area is karst
Found mostly in limestone and is the result of solution of the lime stone How do they form?
As water trickle through the soil down to the limestone rock, it absorbs carbon dioxide from the atmosphere and air gaps in the soil, making the water mildly acidic
Over millions of years, the acidic water disolives the limestone rock and this erroding action hollows out underground caverns, tunnels and streams stretching for many kilometres. The water which disolves the limestone and marble also deposits calcium carbonate, resulting in structures known as "speleothems", the most well known of which are stalctites (grown down from roof) and stalagmites (grow up from floor). http://www.nzqa.govt.nz/qualifications-standards/qualifications/ncea/ncea-subject-resources/geography/clarification-of-standards/clarifications-91009/ Caves created on geological timescales - usually tens to hundreds of thousand years
Human effects occur at timescales of a few years