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: **
** What happens when you pull water up into the vertical tube then remove the tube from your mouth? **
While sucking water through the middle tube, then taking the stopper off the third tube, I am decreasing the pressure that is in the bottle. Originally when I sucked water up the tube I am decreasing the pressure, but after opening the third tube its harder.
** What happens when you remove the pressure-release cap? **
After removing the bottle cap it became harder to pull the water through the tube, due to an increase in air.
** What happened when you blew a little air into the bottle? **
The bubble in the pressure indicating tube moved about a centimeter towards the cap, once I removed my mouth the water began to pour out of the vertical tube. The air moved in the pressure indicating tube because I was blowing air into the system and it had to move somewhere. After I let go the air moved back. I would expect all of that to happen except for the water to pour out of the vertical tube.
** 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: **
If pressure changed app. 1%, I would guess it would change +/- 10 N. I would guess it would raise about 1 cm. The air temperature would have to change it about 20-50 degrees, so about 20%.
** Your estimate of degrees of temperature change, amount of pressure change and change in vertical position of water column for 1% temperature change: **
About 10 degrees. To correspond to a 1 degree change in a temperature I would guess 20-30 Kpa. I would believe it would rise about 1cm.
** The temperature change corresponding to a 1 cm difference in water column height, and to a 1 mm change: **
I would estimate that a 15 degree temperature change would result in a 1 cm difference. I would estimate a 5 degree temperature change to result in a 1 mm height change.
** water column position (cm) vs. thermometer temperature (Celsius) **
STARTS 9cm
(21.8C, 8cm, 21.8)
(21.8C, 7.4cm, 21.8)
(21.8c, 6.9cm, 21.8)
(21.8C, 6.1cm, 21.8)
(21.8, 5.8cm, 21.8)
(21.8, 5.2, 21.8)
(21.8, 5.0, 21.8)
(218, 4.9, 21.8
(21.8, 4.7, 21.8)
(21.8, 4.5, 21.8)
(21.7, 4.2,21.7)
(21.7, 4.1, 21.7)
(21.7, 3.9, 21.7)
(21.7, 3.7, 21.8)
(21.7, 3.5, 21.7)
(21.7, 3.3, 21.7)
(21.7,3.0, 21.7)
(21.7, 2.9, 21.7)
(21.7, 2.7, 21.7)
(21.7, 2.5, 21.7)
** Trend of temperatures; estimates of maximum deviation of temperature based on both air column and alcohol thermometer. **
The temperature changed by .1 degree but that may be due to a incorrect reading. I would not expect it to change.
** Water column heights after pouring warm water over the bottle: **
20.8C
** Response of the system to indirect thermal energy from your hands: **
Nothing significantly. I don't believe my hand temperature could change enough to effect the bottle temperature.
** position of meniscus in horizontal tube vs. alcohol thermometer temperature at 30-second intervals **
During the experiment the temperature did not change, the water that is lying horizontally did not change because there is no pressure acting on it.
** What happened to the position of the meniscus in the horizontal tube when you held your warm hands near the container? **
The temperature did not change or the water in the horizontal tube did not change either, if the temperature did change significantly the water would have risen.
** 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: **
-not much
- v=.1cm^3
-less than 1%
-4C
-The water would rise alot more due to the increase in temperature
I reasoned these answers from the above explanation about how much 1C raises about 3 cm of water.
** Why weren't we concerned with changes in gas volume with the vertical tube? **
I do think it would have been that significant compared to the other measurements and the air pressure.
** 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: **
-If the tube was placed like in the picture the pressure of the gas would have to change hardly any to increase the water by 6cm
-about 2C
-3C
** 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: **
-it would rise app. 3cm
-10-15cm
-40degrees
** Optional additional comments and/or questions: **
1 hr
** **
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