Mon Prof Augmenté
Rain, Rock, and the Salty Sea
Rainwater slowly breaks rock into tiny mineral pieces. Rivers carry these pieces and dissolved salts to the ocean, where they mix into the water and make it salty.
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Age 8: open this week
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In the picture
- Wet rock face: rainwater seeps into cracks and loosens tiny mineral grains.
- Tiny mineral grain in the stream: flowing water carries it downhill.
- Tiny mineral speck in shallow ocean water: it mixes into seawater near the shore.
Examples
- Rain wearing down a stone step.
- A stream carrying tiny minerals toward the sea.
Key takeaways
- Rain and water slowly break rock into tiny pieces.
- Rivers carry minerals to the sea, so ocean water tastes salty.
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Three questions on this lesson. It has left the free week, so its quiz is for subscribers.
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