Rivers to ocean

Follow dissolved materials, currents and the changing conditions of ocean habitats.

Choose any question to begin.

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1. 1

   Why can the same rain make a sharper river peak?

   Compare hypothetical runoff responses from more absorbent and more paved catchments.

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2. 2

   Why does evaporation leave the ocean’s salt behind?

   Track water volume and dissolved salt separately in an ideal mixed basin.

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3. 3

   What can move water across the ocean?

   Contrast wind-driven surface motion with density-related vertical motion.

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4. 4

   Can a bleached coral still be alive?

   Follow coral–algae partnership, stress and possible recovery in a conceptual sequence.

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5. 5

   Can seawater acidify while it is still basic?

   Compare pH and hydrogen-ion changes without pretending to forecast a particular reef.

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Each discovery includes all five reading levels. Journey progress reflects the checkpoints answered on this browser.

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