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Rocks and Minerals: Stories Written in Stone

SheelonEarth ScienceScienceEnglishGrades 6-8Published Aug 6, 2026

Every pebble had a past life as magma, seafloor mud, or something squeezed deep underground. Sort the three rock families and meet the minerals they are made of.

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Questions in this quiz

All 12 shown. Answers not revealed.

  1. Rocks are sorted into how many main families?

    Multiple Choice · 20s

    AThree
    BFive
    CSeven
    DTen
  2. Igneous rock such as granite forms when...

    Multiple Choice · 20s

    ASand is pressed into layers
    BShells pile up on the seafloor
    CMolten rock cools and hardens
    DIce grinds stones together
  3. In which rock family do you have the best chance of finding a fossil?

    Multiple Choice · 20s

    AIgneous
    BSedimentary
    CMetamorphic
    DVolcanic glass
  4. Heat and pressure deep underground turn limestone into which prized building stone?Multiple Choice · 20s
  5. On the Mohs hardness scale, which mineral sits at the top with a perfect 10?Multiple Choice · 20s
  6. Most rocks are mixtures of several different minerals.True / False · 20s
  7. Which natural glass forms when lava cools too quickly for crystals to grow?Multiple Choice · 20s
  8. What surprise hides inside a geode, a rock that looks plain from the outside?Multiple Choice · 20s
  9. Pumice, a volcanic rock, is so full of gas bubbles that it can float on water.True / False · 20s
  10. Which of these is one of the most common minerals in Earth's crust, found in most sand?Multiple Choice · 20s
  11. What do we call a scientist who studies rocks and what they reveal about Earth? (one word)Type Answer · 30s
  12. Which gemstone, the hardest natural material, is made of pure carbon? (one word)Type Answer · 30s

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