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Grade 5 · Science · Unit 5 of 6

The Rock Cycle

Igneous, sedimentary and metamorphic

What your child practises

How igneous, sedimentary and metamorphic rocks form and change into one another, weathering and erosion, and a short reading passage.

NWT Curriculum learning standard: Local types of earth materials; the rock cycle (igneous, sedimentary and metamorphic rock)

Sample questions

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

  1. Question 1

    Put the steps that make sedimentary rock in order.

    • 🟫The sediment settles in layers
    • 🪨Layers are pressed and cemented into rock
    • 🌊Erosion carries the pieces away
    • 🌧️Weathering breaks rock into small pieces

  2. Question 2

    Igneous, sedimentary or metamorphic? Tap a rock, then tap its basket.

    Sort into: 🌋 igneous · 🟫 sedimentary · 🔥 metamorphic

    • 🟤sandstone
    • 🪨conglomerate
    • ⚫basalt
    • ⬜marble
    • 🪨gneiss
    • 🪨granite

  3. Question 3

    Shale is changed by heat and pressure. Which metamorphic rock does it become?

    • conglomerate
    • basalt
    • marble
    • slate

  4. Question 4

    Basalt has tiny crystals, but granite has large ones. Why?

    • basalt cooled quickly; granite cooled slowly underground
    • basalt is a sedimentary rock
    • basalt cooled slowly; granite cooled quickly
    • granite was squeezed by glaciers

  5. Question 5

    How does metamorphic rock form?

    • lava cools on the surface
    • sand settles in a lake
    • wind wears rocks down
    • heat and pressure change rock that already exists

  6. Question 6

    Does the rock cycle have one starting point?

    🔄
    • yes, it always starts with metamorphic rock
    • yes, it always starts with sedimentary rock
    • no, any type of rock can change into another type

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