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How Does a Waterfall Shape Rock? A River Song for Kids

◷ 3:20

How does a waterfall begin, and why does its edge slowly move? This song shows gravity pulling river water over a rocky ledge, while the current carries sand and pebbles that wear away softer rock over a long time. It’s one common way waterfalls form.

Text from the recording’s subtitles.

Song lyrics
Où court cette goutte étincelante ? Un torrent descend le long de la pente La goutte passe entre le sable et les galets Puis atteint un haut seuil de roche La gravité la fait tomber du bord La roche dure couvre une couche tendre Celle du dessous s'use bien plus vite La rivière tombe d'un seuil rocheux Cascade, un blanc rideau d'eau L'eau qui s'écoule sculpte la roche Peu à peu, le bord change de forme En bas, l'eau tourbillonne dans l'écume Elle emporte du sable et des galets Le mélange use la roche tendre, en détache des morceaux Cette usure lente, c'est l'érosion Un creux grandit sous la roche dure La rivière tombe d'un seuil rocheux Cascade, un blanc rideau d'eau L'eau qui s'écoule sculpte la roche Peu à peu, le bord change de forme Au fil des ans, la dalle reste en surplomb Puis un bloc se détache de son bord Le seuil recule un peu vers l'amont La rivière tombe d'un seuil rocheux Cascade, un blanc rideau d'eau L'eau qui s'écoule sculpte la roche Peu à peu, le bord change de forme Plus bas, le courant creuse une gorge La cascade gronde depuis le nouveau seuil
Language version lyrics
Where is that shining droplet racing? A mountain stream curls down the slope It slips past sand and rounded pebbles And reaches one high rocky ledge Gravity pulls it off the edge Hard rock rests on a softer layer The softer layer wears away faster A river falls from a rocky ledge Waterfall, a bright white curtain Flowing water slowly carves the rock Little by little, it shapes the edge At its foot, the foaming water swirls It carries sand and little pebbles The swirling mix scrapes soft rock loose That slow wear and breaking is erosion A hollow grows beneath the hard shelf A river falls from a rocky ledge Waterfall, a bright white curtain Flowing water slowly carves the rock Little by little, it shapes the edge After many years, the shelf overhangs Then a block of rock breaks away The waterfall edge shifts upstream A river falls from a rocky ledge Waterfall, a bright white curtain Flowing water slowly carves the rock Little by little, it shapes the edge Below, the river carves a rocky gorge The waterfall roars at its new edge
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Try after watching

A short activity with an adult, matched to the film’s topic. Expand the instructions.

Practice

A landscape story in pictures

For this film: How Does a Waterfall Shape Rock? A River Song for Kids

Terms to check: Erosion

An excerpt from the recording

Où court cette goutte étincelante ? Un torrent descend le long de la pente La goutte passe entre le sable et les galets
Safety

This is a film-and-paper activity. Do not recreate experiments, take devices apart or touch unknown substances. Ask an adult if unsure.

Materials

The film, paper and a pencil. You can also answer aloud.

Steps

  1. Draw the rock, river or other subject of the geology film.
  2. Arrange three frames: “before — change — after”, using the story.
  3. Mark what the film says about the time involved. Do not invent dates or durations.

What can you notice?

Answer in your own words first, then check the film. Mark a question you want to discuss with an adult.

Explanation sources

Original exercises for this film. Check answers against the source material.

3:17
Audio language: EnglishSongs

How Does a Waterfall Shape Rock? A River Song for Kids

How does a waterfall begin, and why does its edge slowly move? This song shows gravity pulling river water over a rocky ledge, while the current carries sand and pebbles that wear away softer rock over a long time. It’s one common way waterfalls form.

Geology↗
2:58
Audio language: EnglishSongs

How Is Amber Made? A Resin Drop’s Million-Year Journey

Follow a sticky drop of resin from a damaged ancient tree as sand and mud bury and protect it. This curious children’s song explains how resin slowly hardens and changes into amber over millions of years—and why water can reveal amber without creating it.

Geology↗
2:00
Audio language: EnglishSongs

Bubbly Volcano Song: How CO₂ Pushes Foam

A lively children’s song reveals what happens when baking soda meets vinegar: carbon dioxide gas, or CO₂, forms and pushes foam from an open bottle. Dish soap only traps the bubbles; it does not make the gas. Try it with a grown-up, on a tray, away from eyes, and never drink…

Chemistry↗