Mon Prof Augmenté
A River’s Journey from Mountain to Sea
Age 12 · Geography
Open to everyone until Thursday, October 29
To keep it, print it while it is open.
A river collects water from snow and rain in the mountains and carries it all the way to the sea. Along the way, farms, towns and dams all take a share, so less is left for the places further downstream.
In the picture
- Snow and mountain streams: the source where the river’s fresh water begins
- Dam and reservoir: water held back to store it and make electricity
- Irrigated fields: river water turns farmland green while land without it stays dry
- Riverside town: people take water for drinking, washing and industry
- Delta: the river splits into channels and reaches the sea with whatever water is left
Examples
- When a city in a dry summer asks people to limit garden watering, it is protecting a shared water supply.
- Countries along the same river, like the Nile, must agree on how much water each one uses.
Key takeaways
- Only a small part of Earth’s water is fresh water that people can use.
- Water used upstream is no longer available for people and nature downstream.
Quiz: A River’s Journey from Mountain to Sea (Age 12)
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How much of Earth’s water is fresh water that people can use?
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A town near the start of a river takes a lot of its water. What happens to the places further downstream?
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Why do people build a dam and reservoir on a river?
The answers, each with its explanation, are in the app. This quiz is free there while the lesson is in the free week.
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