Mon Prof Augmenté
Boat and Marble in Water
Age 7 · Science
When an object goes into water, it pushes some water out of the way. If the object weighs less than the water it pushes away, it floats; if it weighs more, it sinks.
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Examples
- A plastic duck floats in a bathtub.
- A metal spoon sinks in a sink.
Key takeaways
- Things float when they weigh less than the water they push aside.
- Things sink when they weigh more than the water they push aside.
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