Science 6 · Unit 3: Rocks, the rock cycle and soil · Cambridge Primary Science Stage 6

Questions

1. 1. What does 'metamorphosis' mean?

   • fire
   • change
   • sand
   • layers
   Check

2. 2. How are metamorphic rocks formed?

   • Shells pile up.
   • Existing rocks are changed by heat, pressure or both.
   • Magma cools on the surface.
   • Sediments build up on the sea bed.
   Check

3. 3. Which metamorphic rock forms from limestone?

   • quartzite
   • marble
   • slate
   • gneiss
   Check

4. 4. Which metamorphic rock forms from sandstone?

   • marble
   • slate
   • gneiss
   • quartzite
   Check

5. 5. Which metamorphic rock forms from shale under intense pressure?

   • slate
   • gneiss
   • marble
   • quartzite
   Check

6. 6. Which metamorphic rock forms from granite?

   • basalt
   • gneiss
   • slate
   • marble
   Check

7. 7. Why is slate used for roof tiles?

   • It is hard and long-lasting and splits into thin layers.
   • It is soft.
   • It absorbs water.
   • It is transparent.
   Check

8. 8. Why is marble used for statues and buildings?

   • It is made of sand.
   • It floats.
   • It is hard, shiny, beautiful and lasts a long time.
   • It is soft and crumbly.
   Check

9. 9. What causes the heat and pressure that make metamorphic rocks?

   • the Sun
   • rain
   • hot magma rising and pushing into the rocks, or deep burial
   • wind
   Check

10. 10. Why are metamorphic rocks shiny?

    • They are painted.
    • They contain fossils.
    • They are crystalline.
    • They are wet.
    Check

11. 11. Why do some metamorphic rocks have layers or bands?

    • because they cooled quickly
    • because of fossils
    • because of pressure
    • because of rain
    Check

12. 12. Why do we call it the rock cycle?

    • Rocks are round.
    • Rocks roll in circles.
    • It happens every day.
    • Rocks are changed and re-used over and over again.
    Check

13. 13. In the rock cycle, what happens when magma cools?

    • It forms sedimentary rock.
    • It forms soil.
    • It forms igneous rock.
    • It forms sediments.
    Check

14. 14. Which processes break rock up into sediments?

    • burial and pressure
    • weathering and erosion
    • melting and cooling
    • sedimentation and solidification
    Check

15. 15. Which process changes rock back into magma?

    • erosion
    • sedimentation
    • cooling
    • melting
    Check

16. 16. How long do rock cycle changes take?

    • ten minutes
    • a few days
    • one year
    • hundreds of millions of years
    Check

17. 17. Look at the key. A metamorphic rock is layered and does not look like granite with bands. What is it?

    • gneiss
    • marble
    • granite
    • slate
    Check

18. 18. Look at the key. A metamorphic rock is not layered. What is it?

    • granite
    • slate
    • marble
    • gneiss
    Check

19. 19. Look at the key. A metamorphic rock is layered and looks like granite with bands. What is it?

    • gneiss
    • basalt
    • slate
    • marble
    Check