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Grade 8 · Science · Unit 12 of 13

Water Systems of Earth

Where water is, how it moves and watersheds

What your child practises

Where Earth's water is found and in what form, the water cycle, watersheds and the Great Lakes, how groundwater and the water table change, and how large lakes shape local weather.

Ontario Curriculum expectation: E2.1, E2.2, E2.3, E2.5 · states, distribution and circulation of water, watersheds, changes in the water table, and how bodies of water change the atmosphere

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

    The Great Lakes drain east through the St. Lawrence River into which ocean?

    • the Pacific Ocean
    • the Arctic Ocean
    • the Indian Ocean
    • the Atlantic Ocean
    Show answer

    the Atlantic Ocean

    Hint: The river flows through Quebec to the Gulf of St. Lawrence.

  2. Question 2

    The water table is the top of the…

    • zone where the ground is saturated with water
    • ocean floor
    • clouds
    • highest mountain
    Show answer

    zone where the ground is saturated with water

    Hint: Below it the spaces between soil and rock are filled with groundwater.

  3. Question 3

    Which Great Lakes border Ontario?

    • Superior, Huron, Michigan and Erie
    • Superior, Michigan, Erie and Ontario
    • Huron, Erie, Michigan and Ontario
    • Superior, Huron, Erie and Ontario
    Show answer

    Superior, Huron, Erie and Ontario

    Hint: Lake Michigan is entirely in the United States.

  4. Question 4

    A leaking tap wastes 3 L of water every hour. How many litres does it waste in 24 hours?

    answer boxL

    Show answer

    72 L

    Hint: Multiply the litres per hour by 24 hours.

  5. Question 5

    Conservation authorities in Ontario manage natural resources by…

    • watershed
    • city block
    • phone area code
    • postal code
    Show answer

    watershed

    Hint: Their boundaries follow the land that drains to the same rivers.

  6. Question 6

    Where is most of Earth's fresh water stored?

    • in glaciers and ice caps
    • in rivers
    • in swimming pools
    • in clouds
    Show answer

    in glaciers and ice caps

    Hint: Frozen water holds roughly two thirds of the fresh water.

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