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?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

1- The egg does not move1- The egg does not move

There is a balance of forces exercised on the egg

2- The egg falls in the glass2- 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 attentionThanks for your attention