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7th grade · Science · Unit 8 of 12

Earth's Moving Surface

Plates, the rock cycle and the Cascades.

What your child practices

Practices plate tectonics and evidence from fossils, rocks and continent shapes, the rock cycle, and how processes at different speeds shape Earth's surface, including the Cascade volcanoes.

California Content Standards learning standard: MS-ESS2-1; MS-ESS2-2; MS-ESS2-3 · the rock cycle, surface processes at different scales, and evidence for plate motion

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

    Matching fossils on continents now far apart are evidence that…

    • fossils swim
    • birds carried them
    • the continents were once joined
    • they formed recently

  2. Question 2

    South America and Africa fit together like puzzle pieces. This supports…

    • continental drift
    • gravity
    • photosynthesis
    • the water cycle

  3. Question 3

    The San Andreas Fault is where plates…

    • stack up
    • slide past each other
    • dive under
    • pull apart

  4. Question 4

    Which process is very slow?

    • Mountains rising from plate collisions
    • A flash flood
    • A landslide
    • A volcanic eruption

  5. Question 5

    Plates move about as fast as…

    • your fingernails grow
    • a falling rock
    • a car on a highway
    • a running cheetah

  6. Question 6

    Sandstone buried deep and heated may become…

    • limestone
    • quartzite, a metamorphic rock
    • soil
    • lava

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