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Grade 4 · Science · Unit 8 of 10

Wind, Water, Ice

How land wears away

What your child practises

Children learn how wind, water and ice change the landscape, how soil forms from rocks, and which natural events cause sudden changes.

Prince Edward Island Curriculum curriculum outcome: Space and Earth Science: Rocks, Minerals, and Erosion · weathering and erosion by wind, water and ice, soil formation and sudden landscape changes

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

    What are fossils?

    • rocks that glow in the dark
    • tools used by hunters today
    • remains or marks of living things from long ago
    • pieces of broken glass

  2. Question 2

    PEI’s soil is reddish. What gives it that colour?

    • dye from the ocean
    • fallen red leaves only
    • iron in the rock it came from
    • red paint from long ago

  3. Question 3

    Which of these is an example of erosion?

    • A river carries mud downstream
    • A seed sprouts in a crack
    • A pebble stays still for years
    • A rock cracks where it sits

  4. Question 4

    What is a landslide?

    • a gentle snowfall
    • a sudden slide of rock and soil down a slope
    • a slow walk along a beach
    • a very tall ocean wave

  5. Question 5

    A student blows through a straw at a tray of sand. Which change does this model?

    • erosion by wind
    • soil forming from rocks
    • weathering by plants
    • erosion by ice

  6. Question 6

    What can a glacier do to land as it moves?

    • leave the land completely unchanged
    • scrape up rock and soil and carry it away
    • grow new rocks on top
    • make the land warmer

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