Water on the move

Follow a raindrop, trace a watershed and explore waves and tides.

Choose any question to begin.

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1. 1

   Where can a drop of water go next?

   Trace branching routes between Earth's water stores.

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2. 2

   Which river will this rain reach?

   Trace downhill surface routes and discover the land area connected to a shared outlet.

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3. 3

   How can the ground hold water?

   Discover water stored between grains and in rock cracks.

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4. 4

   Does a wave carry the same water across the ocean?

   Track one particle as the wave pattern travels.

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5. 5

   Why does the sea rise and fall?

   Compare Moon-Sun alignment and tidal range.

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

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