English project
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English project

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English project English project Presentation Transcript

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  • Why ?
    • - the air is heated
    • it extends
    • Molecules move far away from each other
    • - Some air molecules escape
    WE PUT THE BURNING PAPER INTO THE BOTTLE
  • WHEN THE FLAME GOES OUT - the air cools down - Molecules move closer together - A partial vacuum is created P inside < Poutside The higher pressure of the air outside the bottle pushes the egg into the bottle.
  • Is it possible to get the egg out?
  • If we blow air into the bottle around the egg…
  • P inside > P oustside The egg goes out
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  • 1- The egg does not move There is a balance of forces exercised on the egg 2- The egg falls in the glass The only force being exerted on the egg is gravity The egg is in free fall
  • Thanks for your attention