PLEASE HELP!!!
Could a thermometer be used to measure the pressure inside a helium-filled weather balloon?

Question

PLEASE HELP!!!
Could a thermometer be used to measure the pressure inside a helium-filled weather balloon?

anonymous · Answer

why not?!

anonymous · Answer

Well, that's what I was thinking, but would it be more reasonable to measure it with a barometer?

anonymous · Answer

well yes, but you can also use thermometer...

anonymous · Answer

Which do you think would be the best?

anonymous · Answer

Barometer or thermometer?

anonymous · Answer

well barometer would be better of course...

anonymous · Answer

What I'm wondering, though, is how would you get a balloon over the top of a barometer?  Isn't a barometer supposed to be inverted, so that the liquid mercury pushes up into the tube?

anonymous · Answer

barometers if i remember correct are filled with some liquids and are compleatly full

.sam. · Answer

The barometer looks like this |dw:1339117085144:dw|
The inverted tube contains a space of vacuum which will be filled if the outside pressure is high. Atmospheric pressure pushes the mercury down as shown in arrow , them it pushes up the tube. The mercury goes up because that's the place which requires less force to be occupied because its vacuum. If the atmospheric pressure is high, the mercury column will be long, and vice versa.