Your 'bottle thermometer' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** Your optional message or comment: **
please respond with grade relative to c
** What happens when you pull water up into the vertical tube then remove the tube from your mouth? **
it went back down a little bit
** What happens when you remove the pressure-release cap? **
the water went back down and air went in.
there was no pressure to hold it in place.
** What happened when you blew a little air into the bottle? **
the pressure indicator moved then the water came back into the tube I was blowing on.
the indicator compressed the water which made it smaller.
watter went up it.
releasing the pressure pushed water out.
** Your estimate of the pressure difference due to a 1% change in pressure, the corresponding change in water column height, and the required change in air temperature: **
1000 N/m^2
0.102 m
1%
** Your estimate of degrees of temperature change, amount of pressure change and change in vertical position of water column for 1% temperature change: **
3 K
100.33 KPa
0.034 m
** The temperature change corresponding to a 1 cm difference in water column height, and to a 1 mm change: **
0.3 K
0.03 K
1 degree of change is 0.034m so
(1K / 0.034m)* 0.01m and 0.001m
** water column position (cm) vs. thermometer temperature (Celsius) **
22.8, 0
22.7, 0
22.6, 0
22.4, 0
22.3, 0
22.2, 0
22.2, 0
22.2, 0
22.2, 0
22.1, 0
22.2, 0
22.2, 0
22.2, 0
22.1, 0
22.1, 0
22.1, 0
22.1, 0
22.1, 0
22.1, 0
22.1, 0
22.1, 0
** Trend of temperatures; estimates of maximum deviation of temperature based on both air column and alcohol thermometer. **
the bottle thermometer is not as accurate. it didn't move at all.
** Water column heights after pouring warm water over the bottle: **
I have an extreme hot water faucet that puts out 190 degree water.
when it was pored over the bottle it moved 3cm out
** Response of the system to indirect thermal energy from your hands: **
no the liquid did not move
** position of meniscus in horizontal tube vs. alcohol thermometer temperature at 30-second intervals **
24.0, 0
24.2, 0
24.2, 0
24.2, 0
24.2, 0
24.3, 0
24.2, 0
24.2, 0
24.3, 0
24.3, 0
24.3, 0
** What happened to the position of the meniscus in the horizontal tube when you held your warm hands near the container? **
it did not move
** Pressure change due to movement of water in horizonal tube, volume change due to 10 cm change in water position, percent change in air volume, change in temperature, difference if air started at 600 K: **
very little
stayed the same
0.7 ml
0.035 %
0.1 K
0.21 K
** Why weren't we concerned with changes in gas volume with the vertical tube? **
it wasn't accurate.
** Pressure change to raise water 6 cm, necessary temperature change in vicinity of 300 K, temperature change required to increase 3 L volume by .7 cm^3: **
** The effect of a 1 degree temperature increase on the water column in a vertical tube, in a horizontal tube, and the slope required to halve the preceding result: **
** Optional additional comments and/or questions: **
** **
We generally get a significant response to hand warmth, but this experiment is generally done in the winter. Doesn't seem to respond as well in the summer, with the tendency toward warmer ambient temperatures.
190 degree water should result in a much greater change in altitude. It's possible that there's a slow leak between tube and cap, though the fit is pretty tight and the seal should be good.
In any case your predictions are good and you understand this system so you're OK here.