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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.
When measuring a small quantity of liquid which instrument would permit the most accurate reading?
If available, a small, glass graduated cylinder would be best. Next best would be a test tube or any clear or semi-transparent cylinder/ small plastic recycled container/bottle. If an eyedropper is not available, recycle a milkshake straw to move/transfer small quantities of a liquid. Place the bottom end of the straw in the liquid almost to the bottom. Then hold your thumb tightly to the top end of the straw and lift out of the liquid. When you remove your thumb the contents will spill out of the bottom of the straw.
What force is drinking out of straw?
It is all to do with air pressure. We lower the air pressure inside the straw by sucking the air out of it, atmospheric pressure which is pushing down on the surface of the drink literally forces it up the straw into our mouth.
What Chianti has straw around the bottle?
Chianti Classico Raffino had the straw around the flask
Which are demonstrated by water moving up a straw?
The power of suction is what is demonstrated by water moving up a straw. When you suck through a straw, the water has nowhere to go but up.
Why is it difficult to drink liquid with a straw with holes in it?
because when you suck up the liquid, it will just go right through the holes.
When you drink a soft drink with the help of a straw what forces the liquid up the straw?
When you suck on a straw, you decrease the air pressure inside the straw, creating a partial vacuum. The higher air pressure on the surface of the liquid outside the straw then pushes the liquid up the straw and into your mouth.
How is it possible to drink liquid by a straw?
Suction.
Would it be more difficult to draw soda through a straw at sea level or on top of a mountain?
It would be more difficult to draw soda through a straw on top of a mountain because the atmospheric pressure is lower at higher altitudes, making it harder to create the suction needed to pull the liquid up the straw. In contrast, at sea level with higher atmospheric pressure, it would be easier to draw soda through a straw.
Why can't you drink through a straw in a sealed container?
When you try to drink through a straw in a sealed container, you create a vacuum within the container. The vacuum prevents the liquid from being able to flow through the straw because there is no air pressure to push it up. Essentially, the lack of air pressure inside the sealed container makes it impossible for the liquid to move up the straw.
Will it be easier to drink out of a straw from on top of a mountain or in new Orleans?
It will be easier to drink out of a straw from the top of a mountain than from New Orleans. This is because gravity has a stronger pull downward at New Orleans.
Why can't we suck a cold drink through a straw on the moon?
Sucking through a straw relies on atmospheric pressure to push the liquid up. In the airless environment of the moon, there is no atmospheric pressure to assist in the suction action, making it impossible to drink through a straw.
Can you Drink liquid iron from straw?
It is not recommended to drink liquid iron directly from a straw as it can be toxic in high doses. Iron supplements should be taken as directed by a healthcare professional to ensure safety and effectiveness.
What role does atmospheric pressure play when someone is drinking a liquid through a straw?
when you drink through a straw you remove some of the air in the straw. because there is less air the pressure of the straw is reduced. but the atmospheric pressure on the surface of the liquid remains the same. henceforth how it helps you drink
How can you drink from a straw when there's no forces that suck?
You create a pressure difference in your mouth by lowering the air pressure inside when you inhale. This pressure difference causes the liquid to rise up the straw and into your mouth. The difference in pressure is what allows you to drink the liquid through the straw.
How does straw function while drink?
When you 'suck' on a straw, you reduce the air pressure inside it. This means the air pressure on the surface of the liquid outside the straw is greater - so it pushes down, which forces liquid up the straw into your mouth.
Would it be possible to drink from a straw a mile long?
Yes, but it would have to be tilted, almost flat. You can only drink through it if your mouth is not more than 33 feet higher than the surface of the liquid that you're drinking through the straw.
