Grade 7Sciencequiz16 questions

Earth and rocks

Grade 7: layers of the Earth, igneous, sedimentary, metamorphic rocks, volcanoes, earthquakes.

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Free to play. Teams answer on one screen; your phone is the remote. No student devices.

Questions

  1. Which layer of the Earth is the thinnest?

    • Crust
    • Inner core
    • Mantle
    • Outer core
    Show answerCrust

  2. Which layer of the Earth lies directly beneath the crust?

    • Inner core
    • Lithosphere only
    • Mantle
    • Outer core
    Show answerMantle

  3. The Earth's outer core is made mostly of liquid metal. (True or false?)

    Show answerTrue

  4. Which layer of the Earth is solid and at the very centre? (Answer out loud)

    Show answerThe inner core

  5. Which type of rock forms when molten rock cools and hardens?

    • Fossil
    • Igneous
    • Metamorphic
    • Sedimentary
    Show answerIgneous

  6. Sandstone is an example of which type of rock?

    • Igneous
    • Metamorphic
    • Sedimentary
    • Volcanic
    Show answerSedimentary

  7. Metamorphic rocks form when heat and pressure change existing rock. (True or false?)

    Show answerTrue

  8. Limestone can change into which metamorphic rock under heat and pressure? (Answer out loud)

    Show answerMarble

  9. What is molten rock called when it is still underground?

    • Ash
    • Lava
    • Magma
    • Sediment
    Show answerMagma

  10. What is molten rock called after it erupts onto the surface?

    • Basalt
    • Lava
    • Magma
    • Pumice
    Show answerLava

  11. Volcanoes are found only in the middle of tectonic plates, far from their edges. (True or false?)

    Show answerFalse

  12. Many volcanoes and earthquakes occur around the Pacific Ocean in the so-called what?

    • Belt of Ash
    • Circle of Lava
    • Magma Ring
    • Ring of Fire
    Show answerRing of Fire

  13. What are the sudden shakings of the ground called?

    • Earthquakes
    • Erosions
    • Eruptions
    • Landslides
    Show answerEarthquakes

  14. Where inside the Earth does an earthquake begin?

    • The core
    • The crater
    • The focus
    • The vent
    Show answerThe focus

  15. What instrument records the shaking caused by an earthquake? (Answer out loud)

    Show answerA seismograph

  16. Earthquakes happen most often along which features?

    • Calm lakes
    • Flat plains
    • Plate boundaries
    • Sandy deserts
    Show answerPlate boundaries

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