Aqa Science P2 5.5 Activity Sheet Answers [top] File

Explain why your ears ‘pop’ during takeoff in an aeroplane. A7. Outside air pressure decreases rapidly at high altitude; pressure inside the ear is initially higher, so air pushes out until equalised.

What is upthrust? A8. An upward force exerted by a fluid on an object immersed in it (caused by higher pressure at the bottom of the object than at the top). aqa science p2 5.5 activity sheet answers

Why does a ship float? A9. The ship displaces enough water so that the upthrust equals its weight. Explain why your ears ‘pop’ during takeoff in