When boarding an airplane, you bring a bag of chips (or any other item packaged in an airtight foil package) and, while you are in flight, you notice that the bag puffs up. Explain why this happens.
Solution 11E Step 1 : The atmospheric pressure on plane is not the same as on ground. As the plane goes to higher altitudes the air pressure of the plan keep increasing. A chip bag will have air in the bag and there is air pressure in the plane, to maintain the equilibrium the air inside the bag starts pushing the bag from inside, which causes puffing up of the chip bag Thus the variation in the atmospheric air pressure is the reason for puffing up of the air bag