Science 7

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Author:
lstaal1
ID:
21877
Filename:
Science 7
Updated:
2010-06-03 04:19:49
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Science Interactions Ecosystems
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Description:
Interactions & Ecosystems
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  1. What is an Ecological Footprint?
    Measure of environmental impact of human activity on the planet
  2. What 2 men wanted to find a way to measure an Ecological Footprint? (UBC)
    Mathis Wackernagel & William Rees
  3. What does the ecological footprint help us to understand?
    Effect that our way of life has on Earth & on Earth's ecology (environment as it related to living organisms)
  4. To determine ecological footprint, Wackernagel & Rees looked at what factors? (5) *Hint CHAT Food
    • Consumer Goods
    • Housing
    • All Services used everyday
    • Transportation
    • Food
  5. For each ecological footprint factor Wackernagel and Rees calculated how much __________________ , __________________, and _________________ we need.
    • energy
    • material
    • land
  6. Wachernagel and Rees when calculating ecological footprint use the factors CHAT Food and they also include energy, material and land needed. They also include ______________ needed to dispose of waste produced by the way we live.
    land
  7. Wachernagel and Rees converted all of the gathered information into an estimate of total _______________ required to support each one of us. This amound of _____________ is called the ecological footprint.
    • land
    • land
  8. How big is the ecological footprint of the average Canadian?
    7.7 Hectares
  9. 1 hectare = _____________m2?
    10,000
  10. What does it mean when we say each Canadian's ecological footprint is 7.7 ha (hectares)
    Takes 7.7 ha of LAND for each of us to have (CHAT Food)

    Consumer Goods, Housing, All services we use daily, Transportation, Food
  11. What does the size of a person's ecological footprint depend on? (3)
    • Grow your own food?
    • Drive, walk, bike?
    • Renewable energy or Nonrenewable energy?
  12. Does everyone have an ecological footprint?
    Yes
  13. Is it okay to take more resources than earth can provide?
    Never
  14. Compare Ecological Footprints around the World
    USA=
    Canada=
    UK=
    Ghana=
    Vietnam=
    Ethiopia=
    • 8.6
    • 7.7
    • 4.7

    • 1.2
    • .76
    • .67
  15. Country Comparison Stats
    How would factors such as population density, electricity comsumption, & % population living below poverty live affect the size of a person's ecological footprint?
    All of these factors are important. Our electrical comsumption is very high in comparison to other countries and nobody lives below $1/day in Canada leaving our footprint quite high. On the other hand, all 3 other countries are quite poor and have a % of people who live there <$1/day and there ecological footprint is significantly lower than ours. All of the above factors are impactful when comparing country stats.
  16. Wackernagel & Rees calculated how much land is available on earth to support each person. How much is it?
    1.7 ha / person
  17. When Wackernagel & Rees looked at most countries around the world what did they find the average ecological footprint?
    2.2 ha
  18. Did Wackernagel & Rees conclude that overall on Earth we are using MORE or LESS of Earth's resources if we want to protect the environment?
    MORE
  19. What is the Average Canadian Ecological Footprint?
    7.7 ha
  20. Do we need to find ways to reduce our ecological footprint?
  21. Match
    A. primary succession 1. introduction of new species to area; not initially found there
    B. pioneer species 2, >1living thing trying to reach same goal
    C. bioinvasion 3. animal hunts other animal for food
    D. predation 4. 1st species that arrives to an area
    E. secondary succession 5. generally stable community; has wide range of species
    F. competition 6. occurs in areas where no life previously existed d/t no soil
    G. climax community 7. occurs when community destroyed or disturbed by natural occurances or by human activities
    • A. 6
    • B. 4
    • C. 1
    • D. 3
    • E. 5
    • F. 2
    • G. 7
  22. Define bioinvasion
    The rapid expansion of a species into regions where it had not previously existed
  23. Define Predation
    the act of preying by a predator who kills and eats the prey
  24. Define competition
    more than 1 living thing trying to reach the same goal
  25. Define pioneer species
    1st species that arrives to an area
  26. Define primary succession
    Occurs where no life previously existed due to absence of soil
  27. Define climax community
    Occurs when community has been destroyed or disturved by natural occurances or by human activities
  28. Define secondary succession
    Generally stable community that has a wide range of species
  29. Match
    A. DDT 1. chemical pesticide used to kill insects
    B. threatened 2. species that no longer exists anywhere on earth
    C. ecological footprint 3. species that is in serious danger of becoming extinct
    D. extinct 4. species whose numbers are declining
    E. sustainable 5. msmt of amt of materials & energy each person uses daily
    F. endangered 6. Using resources as to not use them up completely
    • A. 1
    • B. 4
    • C. 5
    • D. 2
    • E. 6
    • F. 3
  30. List 3 effects DDT had on the environment that weren't expected
    • 1.
    • 2.
    • 3.
  31. List 2 ways human activity can increase the rate of extinction of other species & why (3 marks)
    • 1.
    • 2.

    Why?
  32. Why is the Golden Toad of Costa Rica an example of the limitations of our scientific and technological knowledge? ( 2 marks)
  33. List 3 ways humans can reduce their ecological footprint. (3 marks)
    • 1.
    • 2.
    • 3.

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