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.
2:58Follow 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.
2:19Follow Ola’s cheese-sandwich bite on an imaginary camera trip into her stomach. See how muscle movements mix the food, while gastric juice and enzymes help break it down before small portions move on to the small intestine.
3:13Maja turns on the TV and wonders how a fish can swim across the screen—and where its splash comes from. This song explores how a signal guides pixels and speakers, how changing still pictures appear to move, and how a vibrating speaker moves the air to make sound.
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