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How Does a TV Make a Fish Move? A Kids’ Song

◷ 3:03

Maja 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.

Concepts explained

Concept glossary ↗

Original explanations based on the cited sources.

Sound

Sound is a travelling vibration in a material, such as air, water or metal. It needs a medium, so it does not travel through a vacuum.

Sources

Pixels

A pixel is one element in the grid of a digital image and stores colour information. Many pixels together form a photo or video frame.

Sources

RGB colour model

RGB describes a colour using red, green and blue light components. Screens combine these components to display many different colours.

Sources

Additive colour mixing

Additive mixing combines light of different colours. A suitable combination of red, green and blue light produces white; mixing paint works differently.

Sources

Sequence of video frames

A video displays successive still images called frames. Showing them rapidly in the right order lets us perceive motion.

Sources

Signal decoding

Decoding reads data stored according to a particular code. During video playback, a decoder turns encoded data into images or sound that can be played.

Sources

Text from the recording’s subtitles.

Song lyrics
Maya pulsa: ¿qué aparece en pantalla? El control manda encender la tele Un pez de colores cruza las burbujas Del altavoz se oye un chapuzón La señal trae datos de imagen y audio Los circuitos los convierten en órdenes La señal dice a la pantalla qué mostrar Los píxeles dan color a la luz El altavoz mueve el aire y suena Imagen y sonido van a la par Con la lupa, Maya ve una cuadrícula Los píxeles no cambian de lugar Cada uno controla tres luces Una roja, una verde y una azul Cambian de brillo y forman muchos colores La señal dice a la pantalla qué mostrar Los píxeles dan color a la luz El altavoz mueve el aire y suena Imagen y sonido van a la par Imágenes fijas cambian muy deprisa El pez parece nadar por la pantalla Vibra la membrana, mueve el aire: ¡chapuzón! La señal dice a la pantalla qué mostrar Los píxeles dan color a la luz El altavoz mueve el aire y suena Imagen y sonido van a la par Maya ve al pez nadar y oye el chapuzón Señal, píxeles y altavoz trabajan juntos
Language version lyrics
Maja clicks—what lights up the screen? The remote sends the power-on command A bright fish swims among the bubbles The speaker gives a watery splash The signal carries picture and sound data Inside, circuits turn them into commands The signal tells the screen what to show Pixels make the colors out of light The speaker moves the air for sound Picture and sound work side by side Maja's lens reveals a tiny grid The pixels stay fixed in their places Each one controls three colors of light Red, green, and blue grow bright or dim Together they make the colors we see The signal tells the screen what to show Pixels make the colors out of light The speaker moves the air for sound Picture and sound work side by side Still pictures change very fast, one by one The fish seems to glide across the screen The speaker membrane shakes and moves air—splash! The signal tells the screen what to show Pixels make the colors out of light The speaker moves the air for sound Picture and sound work side by side Maja sees it glide and hears the splash Signal, pixels, speaker work as one
Open on YouTube ↗
3:13
Audio language: EnglishSongs

How Does a TV Make a Fish Move? A Kids’ Song

Maja 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.

Technology↗
3:08
Audio language: EnglishSongs

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What makes those bright August streaks? This energetic space song shows how tiny grains from Comet Swift–Tuttle enter our atmosphere and create the Perseids. It also shares easy, safe viewing tips—no telescope needed.

Astronomy↗
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How Does a Smoke Detector Work? | Smoke, Light, Alarm! Kids’ Song

How does a smoke detector notice smoke? This upbeat science song explores a common optical detector: smoke enters its chamber, particles scatter LED light toward a receiver, and the electronics sound a warning. An alarm warns people but does not put out a fire. An adult should test it with the button as directed.

Technology↗