Social Studies Mindmap notes
- Created by: SimmiB
- Created on: 07-11-15 05:48
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- Earth Under Pressure
- How well is our Planet?
- Global Warming
- Causes
- CO2 emmisions
- Deforestation
- Consequence
- Rising sea levels
- Temperature increase
- Melting of Arctic and Antarctica
- Causes
- Poverty
- Causes
- overpopulation
- inequalities
- illeterate
- Consequence
- Can't learn how to care for environment - no schools
- jobs that cause destruction
- Causes
- Overpopulation
- Causes
- illeterate
- Cultural beliefs
- Consequence
- More land & natural resources taken up
- More illiterate people
- Causes
- Deforestation
- Causes
- demand for timber
- More land needed
- Consequence
- need trees for oxygen
- destroys widlife
- more greenhouse gases
- Causes
- Polltution
- Causes
- nonrenewable
- illeterate
- not enough space in landfills for rubbish
- Consequence
- toxifys drinking water
- slowly destroys planet
- Causes
- Global Warming
- World Biomes
- Polar
- Permanently cold
- Continuous darkness 4 months
- Temperature up to -70 degrees
- Tundra
- Sun does not set
- Absence of trees marshes and grass
- Not enough sun energy to grow trees
- Boral Forest
- Supports really little animal life
- 1/3 of trees in the world
- Deciduous Forest
- Characteristic
- longer summers= broader leaves= longer life 4 animals
- migration & hibernation common 4 winter
- Issues/threats
- hunting and habitat destruction = animal extinction
- Characteristic
- Tropics
- All year around summer warmth
- Contains 50% of plants and animals
- Desert
- Characteristic
- Covers 1/3 of land
- dust storms
- Issues/threats
- Get bigger every year- threaten to take over
- Characteristic
- Polar
- Population Exploded
- Population grew slowly
- Death from disease and hunger equaled birth
- People had to work hard to survive
- Population growth rate is faster than death rate
- Educated people began to understand science
- Link with bacteria & disease discovered
- Hygienic health measures discovered
- Fewer children died of disease & people lived longer
- People are wealthy and population growth is slow.
- Birth control measures widely used
- Fewer children= more comfortable lifestyle
- Both death & birth rates low
- Well educated
- Overcrowding & starvation common & pop. grows
- Fewer children die b/c health measures from wealthy countries
- More food & fuel needed 2 feed extra people
- Land over-cropped & over-grazed & forests cut down for fuel
- Fewer trees= less rain droughts occur
- Country people move to cities
- People are poor & no education
- For poor families children are seen as sercurity for the future
- Population grew slowly
- Greenhouse effect
- Natural
- (1) sun radiating heat to Earth
- (2) Most of the heat is absorbed by earth some reflected by clouds and atmosphere into space
- (3) This heat energy that is emitted back into space is trapped and keeps our planet temperature sustainable
- Modified by humans
- (4) Since Industrial Revolution large amounts of greenhouse gases released into atmosphere
- (5) More greenhouse gases = more heat trapped
- (6) "Enhanced Greenhouse Effect" Earths temperature warming 0.5 degrees last century.
- (7) in the future environment impact - ice melting, sea rising and climate change
- Natural
- Greenhouse gases
- Carbon Dioxide
- Transport
- Television
- Industry
- Fire
- Logging
- Coal fired power
- Nitrous Oxide
- Fertiliser
- Methane
- Sheep
- Cow
- Rubbish/waste
- Grass Clippings
- Carbon Dioxide
- Possible Impacts on New Zealand
- Tropical cyclones threaten homes, roads and businesses
- Heatwaves in Alexandra
- Fire and drought rainfall decrease 20%
- Forestry industry- increased tree growth but pests & water shortages may occur
- Increased rainfall events means storm water infrasturture needs upgrade - rate payers
- changing ocean currents and temperature impact on fish stock
- Increased coastal erosion and salinity of low lying areas
- Threaten glaciers
- Bio-diversity of alpine areas may be threatened
- Weeds like Kikuyu increase b/c of increased temperatures
- Dengue and Ross River Virus increased risk
- Kauri may face extinction
- How well is our Planet?
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