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What happens when you drink through a straw?
This question points up some key misconceptions about what a vacuum is.So you put a straw in your cup of water. If you look down the straw or could look through it, you would see that the level of water inside and outside the straw are exactly the same. This is because the atmosphere is pushing down on the water inside the straw, and it is pushing down equally hard on the water outside the straw. So the pressures are equal.When you suck on the straw, you are decreasing the pressure in your mouth and lowering the pressure of the air in the top of the straw. When that happens, the force of the atmosphere pushing on the water in the glass is higher than the force of gas inside the straw. The atmosphere forces the liquid up the straw into your mouth. So, in essence, you ARE NOT sucking the liquid into your mouth, the atmosphere is pushing it there.This is easily proved by an experiment. Try drinking water from a straw that is more than 20 meters tall. It won't work. At around 20 meters, the massive column of water inside the straw would be pulled down by gravity, with a force greater than the upward force caused by the atmosphere. Even if you completely evacuate the straw with a high-powered pump the water won't make it up the straw. This is why you can't pump water out of a well that is more than 20 meters deep in the ground. Anything deeper than that and you need to use a compressor to pump air at high pressure down into the well, to force the water out (essentially make the upward pressure higher than the atmosphere alone provides), or revert to the tried and true method using buckets.Of course, a similar principle applies with underground or artesian wells. The water there is already under greater pressure and will flow to the surface if given a path.
What body of surface water is stationary?
technically water is never stationary as it is made up of moving particles
Why does a straw appear bent in a cup of water?
A straw looks "bent" when it's in water because water causes light to "change course" when it moves from air into the water. The light will again be caused to change course when it leaves the water to go back into air. This is called refraction. Refraction is a fundamental property exhibited by a wave that changes mediums through which it is traveling.Or, making it simple..A straw seems bent because water is denser than air, so when it changes from air to water is applied it seems bent.
Why it is difficult to drink liquid with straw on the top of the mountain?
It would be more difficult to drink with a straw on the top of a mountain because of low atmospheric pressure. You would not have as much pressure to push the drink up the straw.
What is one example of constructed fluid systems?
A juice box straw is. When you suck in you create an area of low pressure in the straw. The fluid inside the juice box rushes into the straw and up into your mouth. This is one of the most basic one though
Why does water go higher up a straw?
Water rises up a straw due to capillary action, which is the result of adhesive forces between the water molecules and the material of the straw. This causes the water to climb up the walls of the straw, against the force of gravity.
Why does a straw bend when it meets water?
When a straw meets water, the water molecules are attracted to the straw due to the force of surface tension. This attraction pulls the water up the sides of the straw, causing it to bend as it follows the shape of the straw.
What is it called when water climbs up the straw due to adhesion?
Capillary action is the phenomenon where water climbs up a straw due to adhesion to the straw's surface, pulling the water along with it. This occurs because the adhesive forces between water and the straw are stronger than the cohesive forces within the water molecules.
How do adhesion and cohesion explain capillary action?
Surface tension is related to the cohesive properties of water. Capillary action however, is related to the adhesive properties of water. You can see capillary action 'in action' by placing a straw into a glass of water. The water 'climbs' up the straw. What is happening is that the water molecules are attracted to the straw molecules. When one water molecule moves closer to a the straw molecules the other water molecules (which are cohesively attracted to that water molecule) also move up into the straw. Capillary action is limited by gravity and the size of the straw. The thinner the straw or tube the higher up capillary action will pull the water.
What would happen if you put a straw in a cup of water?
The straw will displace the water, causing the water level inside the straw to rise slightly. When you suck on the straw, you create a vacuum inside it, pulling the water up into the straw and allowing you to drink it without tilting the cup.
How does capillary action allow water to climb up sides of a straw?
The capillary action allows water to climb up sides of a straw due to adhesive forces.
Why does when you cover up 1 end of a straw the water stays on the end?
When you cover one end of a straw and place it in water, the air pressure inside the straw gets lower than the atmospheric pressure outside. This pressure difference pushes the water up into the straw and creates a seal at the open end. This allows the water to remain inside the straw even when the open end is lifted out of the water.
What happens to the level of water in the straw when you squeezed the bottle?
When you put a straw in a water bottle I think the straw stinks and then when you let go of breathing in the water bottle I think it increases and then after that I think when you boil water and then you put the straw in the bottle and put the boiling hot water in the bottle and then I think the straw is like cutting it thanks for reading this but I think it's the wrong answer sorry if it is
What happens to the water in the straw when you take your finger off the top?
When you take your finger off the top of a straw, the atmospheric pressure pushes the water up the straw to fill the empty space created by your finger. This is due to the difference in pressure between the top and bottom of the straw.
What happens to the level of the water in the straw when the water in the bottle is cooled?
When the water in the bottle is cooled, it contracts and creates a lower pressure inside the bottle. The higher atmospheric pressure outside the bottle pushes the water up through the straw to equalize the pressure, causing the water level in the straw to rise.
Why would the water in your drinking straw not drip out when you press the top of the straw?
When you press the top of the straw, you create an area of low pressure inside the straw. The atmospheric pressure outside the straw then pushes the water up into the straw, preventing it from spilling out. This balance of pressures keeps the water inside the straw when you press the top.
What is upwelling?
the movement of deep, cold, nutrient-rich water goes up to the surface. Up-welling can be rising of any liquid. water moving up from the benthic zone
