Mon Prof Augmenté
Water Pushes Up
Open to everyone until Thursday, October 1
To keep it, print it while it is open.
When an object is under water, the water pushes it upward. The size of that push is the same as the weight of the water the object pushes out of the way.
In the picture
- The metal cube in the water: the object that the water pushes upward.
- The spring scale above the tank: shows how much the cube pulls down while it is in the water.
- The beaker on the balance pan: the weight of the water that overflowed from the tank.
Examples
- A heavy rock feels lighter when you lift it under water.
- A boat floats because the water pushes up on it as much as the boat’s weight.
Key takeaways
- Water pushes up on anything placed in it.
- The upward push equals the weight of the water pushed aside.
Carry on in the app
Three questions on this lesson, to check the idea stuck. Free in the app while the lesson is in the free week.
At least one new illustrated lesson every weekday for your child’s year, with its quiz and a reminder at 6:15 pm.
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