this is hard to explain but ill try
you fill a bottle with water, you then fill a bowl with water
you turn the bottle upside down so that the mouth of it is submerged in the bowl why dosent the water come out?
2007-02-12 14:13:37 · 12 answers · asked by Anonymous in Science & Mathematics ➔ Physics
suction
2007-02-12 14:15:34 · answer #1 · answered by Anonymous · 1⤊ 1⤋
the pressure of the air (14.7 pounds / square foot) pressing down on the water in the bowl is sufficient to hold the weight of the water in the bottle above the surface level.
a better example of this would be:
get a plastic soft drink bottle and cut off the bottom (leave lid on).
fill a sink with water and fill bottle from sink.
now stand the bottle upright without letting any air in.
the water level in the bottle is held above the surface level of the water.
now open the cap: the water level in the bottle and the sink will equalise.
2007-02-13 03:28:26 · answer #2 · answered by only1doug 4 · 0⤊ 0⤋
For the water to come out of the bottle something has to get into the bottle to replace it. Since the mouth of the bottle is under water, once an initial small amount of water has leaked out there is a suction in the space in the top. No more water can leak out.
2007-02-12 22:18:31 · answer #3 · answered by David T 1 · 1⤊ 0⤋
In order for water to flow out of the bottle and into the bowl, it would be necessary to have something to replace it. It's a simple as that, if there is no air supply into the bottle, for the water to flow out, it would have to leave a vacuum behind, which would simply 'suck' the water back up into the bottle. So the water does not leave the bottle.
2007-02-12 22:20:48 · answer #4 · answered by steveflatman 2 · 1⤊ 0⤋
previous answers correct. However if you use a 35 foot bottle you will find that water does run out down to a level of 32 feet leaving a partial vacuum above. This shows the maximum height of water that air pressure at sea level can support.
2007-02-13 17:26:15 · answer #5 · answered by peter c 2 · 0⤊ 0⤋
I understand what youre talking about.
The Reason the water doesnt come out is because the density of the water in the bottle is the same as the density of the water in the bowl therefore they stay stationary.
2007-02-13 15:30:31 · answer #6 · answered by Reaper23 3 · 0⤊ 0⤋
to drive the water out you would need to introduce air to the bottle, with no air in the bowl of water, air cannot get into the bottle, so the water stays there.
Try a similar exersise with a small diameter tube, insert one end in the water, and then plug the other end with your thumb, lift the tube up and the water will stay in, lift your thumb and the water will fall out
2007-02-13 08:14:59 · answer #7 · answered by ArskElvis 3 · 0⤊ 0⤋
Because air cannot enter the bottle. If the water left and no air took its place that would create a vacuum.
2007-02-12 22:20:29 · answer #8 · answered by frugernity 6 · 2⤊ 0⤋
Water flows from regions of higher pressure to regions of lower pressure. In this case there is no flow because of an equilibriru in pressure thoughout the system.
2007-02-13 07:41:56 · answer #9 · answered by jaqopany 2 · 0⤊ 0⤋
It doesn't leak ,simply because of the aquatic upward pressure.
Rino jr.
2007-02-12 22:22:53 · answer #10 · answered by rino j 1 · 1⤊ 0⤋