Science · Topic 40 of 64
Buoyancy
⭐ MasteredBuoyancy is the upward push that a liquid or gas gives to an object placed in it. It helps boats and balloons stay up.
💡 Fun fact
Archimedes discovered buoyancy while he was taking a bath.
All about Buoyancy
Buoyancy is the upward push a fluid gives to an object placed in it. The push equals the weight of the fluid the object pushes aside.
Buoyancy keeps boats afloat, lets swimmers float and helps balloons rise in the air.
🎮 Try it yourself!
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Real-life uses of Buoyancy
- Designing boats and ships
- Understanding how lifejackets keep people up
- Explaining why hot air balloons lift off
Frequently asked questions about Buoyancy
What causes buoyancy?
Fluids push upwards on objects placed in them, and this upward push is buoyancy.
Why do some heavy ships float?
They are shaped to push aside a large volume of water, which gives enough upward push.