Exam-style Questions: Environmental Problems

  1. Label the following as "renewable" or "fossil" fuels...

    a) gas;

    b) coal;

    c) straw;

    d) water;

    e) petroleum;

    f) wood.

    (Marks available: 6)

    Answer

    Answer outline and marking scheme for question: 1

    a) fossil;

    b) fossil;

    c) renewable;

    d) renewable;

    e) fossil;

    f) renewable.

    (Total = 6 marks)

  2. What are the 2 main greenhouse gases?

    (Marks available: 2)

    Answer

    Answer outline and marking scheme for question: 2

    (i) Carbon dioxide;

    (ii) Methane.

    (Total = 2 marks)

  3. Name and briefly describe the 4 main effects of deforestation.

    (Marks available: 8)

    Answer

    Answer outline and marking scheme for question: 3

    a) Decrease in rainfall - less trees means less transpiration and photosynthesis.

    (2 marks)

    b) Soil erosion - the expanded soil dries out under the Sun;

    (2 marks)

    c) Serious flooding - rainwater runs off the exposed soil rather than soaking in as before;

    (2 marks)

    d) More carbon dioxide - the trees that used to remove the gas are gone.

    (2 marks)

    (Total = 8 marks)