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Science / Water cycle / Grade 4 / sw401

Trace Water Along Different Routes

Follow evaporation, condensation, runoff, and infiltration.

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Track both water's location and state. Evaporation changes liquid to gas; condensation changes gas to liquid. Runoff moves over land, while infiltration moves into soil.

Worked example

Rain on a hill may flow over the surface into a stream. That movement is runoff. Water soaking into the soil follows a different route called infiltration.

1. A puddle gets smaller as liquid water becomes water vapor. Which process is this?
2. Water vapor cools and forms tiny liquid droplets. Which process is this?
3. Rainwater flows over a paved path into a stream. Which process is this?
4. Water soaks from the surface into soil. Which process is this?
5. Must every drop follow exactly the same route through the water cycle?