Small voltages and circuits
Choose low-voltage aids for use with an adult. These resources do not cover measurements or experiments on mains wiring.
Parents’ guide ↗What happens after the kettle switch clicks? This catchy educational song shows how a closed circuit powers an insulated heater, heat circulates through the water, and a thermostat cuts the current when boiling begins. It also explains why the white mist is made of tiny droplets—and why a hot kettle is for an adult to handle.
Original explanations based on the cited sources.
Electric current is a directed flow of electric charge. Electrons carry it in metal wires, while ions can carry it in solutions.
Sources
A circuit connects electrical parts, such as a battery, wires and a lamp. In a simple battery circuit, current flows when the path is closed.
Sources
Text from the recording’s subtitles.
After the film, explain what happened in your own words. Draw an example and choose a question to explore together.
Choose low-voltage aids for use with an adult. These resources do not cover measurements or experiments on mains wiring.
Parents’ guide ↗Choose a country
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2:17What happens after the kettle switch clicks? This catchy educational song shows how a closed circuit powers an insulated heater, heat circulates through the water, and a thermostat cuts the current when boiling begins. It also explains why the white mist is made of tiny droplets—and why a hot kettle is for an adult to handle.
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.
3:02How 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.
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