Archimedes' Principle
Below is a lesson for kuds about Archimedes Principle. Good luck and enjoy!
Hello kids, I will begin the story with who Archimedes was and when he lived. Then I will explain why he is important and how his principle works. Let's begin, shall we?
Archimedes was a super smart scientist, mathematician, and inventor who lived in Ancient Greece a long time ago (around 287 BC to 212 BC). He loved to solve hard puzzles, draw shapes in the sand, and invent cool machines that we still use today!
Famous Stories and Inventions
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The Bathtub "Eureka!": The king asked him if his gold crown was real or fake, without breaking it. While stepping into a full bath, Archimedes saw the water rise. He figured out that an object's volume pushes water away, yelled "Eureka!" (which means "I found it!"), and solved the puzzle.
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The Archimedes Screw: He invented a giant twisting tube that could lift water uphill to help farmers water their crops.
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Levers and Pulleys: He figured out how levers can make heavy things easy to lift, famously saying he could move the whole Earth if he had a big enough lever and a place to stand.
When you sit in a full bathtub, the water level goes up because your body pushes water out of the way. The water you pushed away pushes back up on you! If you weigh the water you moved, it matches the upward push that helps you float.
The Magic Water Push
Water moves: When a toy or your body goes into water, it pushes some water aside.
Water pushes back: The water wants its space back, so it gives an upward boost.
Weighing the splash: The strength of that upward boost is just as heavy as the water that got pushed out of the way.
Why Big Boats Float
Heavy boats: Giant ships look like they should sink.
Lots of space: Ships are hollow and full of air inside, which lets them push away a huge mountain of water.
Strong support: Because they push away so much water, the water pushes back hard enough to keep the heavy ship floating on top.
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Video #1
https://www.youtube.com/watch?v=PQBQN1zUm24
Video #2
youtube.com/watch?v=wChr0hCga5g&vl=en
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