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Cambridge IGCSE Environmental Management practice

Paper 1 structured question: Formation of rocks

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Formation of rocks

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Paper 1Theory3 marks

The rock cycle shows how rocks change from one type to another over time.

Diagram Description

The Rock Cycle

The diagram illustrates the processes of melting, cooling, erosion, compaction, and metamorphism that transform rocks between igneous, sedimentary, and metamorphic types.

  1. a

    Describe Describe how igneous rocks such as granite and basalt are formed.

    Aim for approximately 3 distinct marking points.

    [3]

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Paper 1 structured question: Formation of rocks

Paper 1Theory6 marks

Description

Sedimentary and Metamorphic Rocks

Sedimentary rocks form from compacted sediments like sand, clay, or marine remains. Metamorphic rocks form when existing rocks are subjected to heat and pressure without melting, causing physical and chemical changes.

  1. a

    Explain Explain how limestone, sandstone, marble, and slate are formed.

    Aim for approximately 6 distinct marking points.

    [6]