Revision worksheet answers

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Revision worksheet answers

  1. 1. Inter-relationship between people and environment (2a People IM ) PO I VE PA S SIT CT ITIV PO S a) CT S E(1 A IMP (1bIMP ) NEG ATIVE AC AT EG ) N TS TS IVE (2b AC IMP Environment
  2. 2. Inter-relationship between people andenvironment 1a. How does human activities have positive impact on the environment?  “Cloud seeding” = use rockets/planes to disperse substance > brings rainfall into areas that are semi arid/ facing drought  Positive impacts = survival of vegetation, prevent drought  Sustainable development = meets the needs of the present without compromising the ability of future generations to meet their own needs
  3. 3. (1b)How does human activities have negative impact on the environment? Humans may over cultivate the soil, which leads to soil erosion Soil erosion = detachment of soil particles, causes soil to loosen Deforestation = removal of top layer of soil (which contains the most nutrients and minerals). Hence during heavy rainfall, top soil will be washed off
  4. 4. 2a.How does the physical environmentaffect people positively It provides natural resources thatbenefits people eg Sunlight, minerals Note: Resources can be renewable(Able to replenish itself eg air, wind) ornon-renewable (Unable to replenishitself/takes a long time to replenish egcoal, petroleum)
  5. 5. 2b. How does the physical environment affect people negatively?Natural disasters that destroys human settlements eg Flood, tsunamiUnfavourable weather conditions will affect people’s activities eg rainy day
  6. 6. 3.Which has a greater influence? Justify your answers. (a) Environment has greater influence on people as extreme weather changes or natural disasters are beyond human control eg Tsunami, flooding (b) People has greater influence on environment as changes made to the environment causes irreversible damages. Humans also depletes natural resources that are limited in their supply.
  7. 7. A. What is the definition of the Physical and Human environment? !Kung Bushmen Singaporean  Live in a largely  Live in a largely physical human environment environment  Adapted to their  Modified much of environment and made few changes the environment to to it meet their needs
  8. 8. !Kung Bushmen SingaporeansTechnology Simple technology High-technology such as Handmade tools Eg. Ostrich egg shells Eg, Water kettle, to store water, Eg Spears made from Eg Steel rods in wood and animal hunting, bones, Eg Bows and arrows Eg Machine guns made from animal in hunting muscles, stems and grass
  9. 9. !Kung Bushmen SingaporeansWater Water holes Tapssources Fruits and berries Reservoirs/Rain Imported water Bottled/canned drinksFood Hunting animals Buying cooked foodsources Gathering roots, or raw food from the berries, fruits and nuts super-markets, wet from the wild markets and food stalls
  10. 10. !Kung Bushmen SingaporeansVegetation Sparse vegetation Little natural vegetation -Deserts covered with -Planted trees mostly land and flowers - Shrubs and -Conserved grassland natural catchment areas

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