What Kids Learn:
In this STEAM activity, Floating Egg, kids learn about two cool things.
- Buoyancy: That’s when water pushes things up, like how you float in a pool.
(When you try to float on the water, you feel lighter because the water is pushing you upward. )
- Density: Density is like how heavy something is compared to its size.
(For example, a heavy rock is denser than a light foam ball of the same size.)
Normally, eggs sink in water because they’re heavy, but when you add salt to the water, water becomes heavier. The egg gets a boost from the water and can float a bit. So, it’s like the salt water helps the egg float by making the water super heavy. It’s a fun way to see how heavy water can change whether things sink or float!
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What We Need
How To Do Floating Egg Experiment
- Fill two glasses with water.
- Gently place a raw egg in one of the glasses and notice if it sinks.
- Add salt to the water in the other glass, stirring until it dissolves.
- Carefully place the other egg into the glass of salty water.
- Watch what happens – does the egg float now?
- Have fun experimenting and learning about why the egg behaves this way!”
Variations & Challenges
- Experiment with different amounts of salt to find the concentration that makes the egg float the best. What’s the least amount of salt needed for the egg to float?
- Instead of salt water, try using other liquids like sugar water or water with vegetable oil. How does the egg behave in these liquids?
- Try other objects like grapes, small toys, or coins. See if they float differently in salt water compared to regular water.
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