Lesson T9.2.2

T9.2.2 Igneous, sedimentary and metamorphic rocks Quiz: KS3 Chemistry, Unit 9

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson T9.2.2, Igneous, sedimentary and metamorphic rocks: 20 multiple choice questions for the KS3 Chemistry (National Curriculum), Unit 9: Earth and atmosphere, written with Revision Ninja.

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The 20 questions

  1. What type of rock is granite?

    • Clastic only
    • Metamorphic
    • Sedimentary
    • Igneous

  2. What type of rock is limestone?

    • Igneous
    • Igneous and metamorphic
    • Metamorphic
    • Sedimentary

  3. What type of rock is marble?

    • Sedimentary
    • Igneous
    • Volcanic glass
    • Metamorphic

  4. Which rock is formed when lava cools quickly at the Earth's surface?

    • Limestone, with visible fossils
    • Basalt, with small crystals
    • Marble, with banded patterns
    • Granite, with very large crystals

  5. What does a large crystal size in an igneous rock suggest?

    • The magma cooled slowly underground
    • The rock formed from sediment
    • The rock was never heated
    • The magma cooled very quickly at the surface

  6. Which type of rock often contains fossils?

    • Volcanic glass
    • Metamorphic
    • Igneous
    • Sedimentary

  7. Which rock is formed from shale under heat and pressure?

    • Granite
    • Basalt
    • Limestone
    • Slate

  8. Which feature is typical of a metamorphic rock?

    • Holes from gas bubbles trapped in the rock
    • Crystals that are often aligned in bands
    • Glassy texture from very quick cooling at the surface
    • Clear layers of shells found in the rock

  9. Which rock is formed from the cooling of magma that has bubbles of gas trapped in it?

    • Sandstone
    • Pumice
    • Marble
    • Granite

  10. Why do sedimentary rocks have layers?

    • Sediment was deposited in successive layers over time
    • The rock was cut into thin layers by machines in a factory
    • Heat turned the rock into many separate layers over time
    • Magma cooled in separate layers underground over time

  11. Which rock is changed from sandstone under heat and pressure?

    • Basalt, an igneous rock
    • Quartzite
    • Granite, an igneous rock
    • Obsidian, a volcanic glass

  12. Which type of rock is most likely to form deep underground from magma?

    • Limestone
    • Granite
    • Sandstone
    • Clay

  13. Which rock forms when sediment is compacted and cemented into a solid?

    • Basalt, an igneous rock
    • Granite, an igneous rock
    • Sandstone
    • Marble, a metamorphic rock

  14. What is the main effect of heat and pressure on rocks?

    • They turn the rock into loose sediment that washes away quickly
    • They turn the rock into a liquid metal that flows freely
    • They make crystals grow or re-form without the rock melting
    • They make the rock melt completely into hot magma below ground

  15. Which pair of rock types has crystals that formed by cooling of molten rock?

    • Metamorphic rocks only
    • Sedimentary rocks only
    • Sedimentary and metamorphic rocks
    • Igneous rocks only

  16. Which rock type is most likely to be found in layers near a river delta?

    • Granite, from magma
    • Metamorphic, from heat
    • Igneous, from magma
    • Sedimentary

  17. Which is an example of a rock formed by the cooling of lava at the surface?

    • Marble
    • Basalt
    • Sandstone
    • Limestone

  18. What is the main process that turns sand into sandstone?

    • Compaction and cementation
    • Melting and cooling
    • Heating and squashing without melting
    • Erosion and transport

  19. What type of rock is chalk?

    • Sedimentary
    • Metamorphic
    • Igneous
    • Volcanic glass

  20. What type of rock is obsidian?

    • Fossil-bearing
    • Metamorphic
    • Sedimentary
    • Igneous

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