>thermometer
>siphon
>thermostat
>barometer
2007-07-06 22:54:15 · 11 answers · asked by nana 2 in Science & Mathematics ➔ Other - Science
barometer and siphon.
2007-07-06 22:56:55 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Thermometers and thermostats operate off of temperature. A siphon works off of pressure moving from hight to low. A barometer also operates with air pressure.
2007-07-07 17:32:39 · answer #2 · answered by Ace 1 · 0⤊ 0⤋
answer - Barometer
Bordon barometer operates on a diaphragm with coil and indicator that diaphragm will move according to pressure and move the coil for a small deviation of of a scale
thermometer - is used in temperature measure not in pressure. usually employs the mercury that expand with temperature. Other use the principle of temperature expansion of a material using coil.
siphon - could never operate if there is an entrance of air inside the siphon. usually siphon has a partial vacuum pressure at the summit and positive pressure near the ends of tube. No air pressure involved here
thermostat - this regulates the temperature of a conditioning system.
2007-07-10 18:26:05 · answer #3 · answered by CPUcate 6 · 0⤊ 0⤋
Thermostat, Barometer
2007-07-07 05:58:01 · answer #4 · answered by Army Retired Guy 5 · 0⤊ 0⤋
Barometer and Siphon
A barometer is useful to show you the air pressure.
A siphon (syphon is another spelling) is a device which can transfer a liquid from a higher level to a lower level without using a mechanical pump and depends on air pressure to lift the liquid over the vessel's higher level edge.
2007-07-07 12:16:23 · answer #5 · answered by Swamy 7 · 0⤊ 0⤋
siphon, barometer, and some thermostats (pneumatic thermostats sense temperature, and make appropriate branch air pressure changes to control heating valves, cooling valves, and dampers)
2007-07-08 00:03:46 · answer #6 · answered by maddog27271 6 · 0⤊ 0⤋
siphon and barometer
the other 2 are based on temperature
2007-07-07 07:10:13 · answer #7 · answered by rosie recipe 7 · 0⤊ 0⤋
siphon as it has to have somewhere to move from high to low pressure to get it started
barometer moves fluids by air pressure to give a reading
2007-07-07 05:57:41 · answer #8 · answered by Anonymous · 0⤊ 0⤋
siphon and barometer
2007-07-07 06:03:50 · answer #9 · answered by BS 1 · 0⤊ 0⤋
barometer and siphon
2007-07-07 05:58:56 · answer #10 · answered by stan t 3 · 0⤊ 0⤋