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Cambridge IGCSE Environmental Management practice

Paper 1 structured question: Fossil fuel formation

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Fossil fuel formation

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Paper 1Theory3 marks

Formation of fossil fuels

Diagram Description

Diagram showing the formation of coal

The diagram illustrates dead plant material accumulating in a swamp, being buried by sediment layers, and over time transforming into coal due to heat and pressure.

  1. a

    Explain how coal is formed from dead plant material.

    Aim for approximately 3 distinct marking points.

    [3]

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Paper 1 structured question: Fossil fuel formation

Paper 1Theory4 marks

Description

Formation of oil and gas

Oil and natural gas are formed from tiny marine organisms that died and settled on the sea floor. Over millions of years, sediment layers covered these remains. Heat and pressure transformed them into oil and gas trapped in rocks underground.

  1. a

    Describe the process by which oil and natural gas are formed.

    Aim for approximately 4 distinct marking points.

    [4]