How does the water or juice move upwards through the straw while drinking?

While we drink the water through straw we suck the air inside the draw. While we suck it some air inside the draw comes up to our mouth and there is less amount of air inside the straw in more space. So the pressure of the air is decreased inside the straw. While there is a difference in pressure the atmosphere tries to balance it. So the air outside the straw which is at high pressure tries to enter into the straw and so it pushes the water on the surface of the container. This makes the water to go inside the straw.

How does the water or juice move upwards through the straw while drinking?

How does the water or juice move upwards through the straw while drinking?

          While we drink the water through straw we suck the air inside the draw. While we suck it some air inside the draw comes up to our mouth and there is less amount of air inside the straw in more space. So the pressure of the air is decreased inside the straw. While there is a difference in pressure the atmosphere tries to balance it. So the air outside the straw which is at high pressure tries to enter into the straw and so it pushes the water on the surface of the container. This makes the water to go inside the straw.

Explained below in detail:

Nature’s tendency:

          Always any liquid or air has a natural tendency to flow from high concentration to low concentration to balance it.

Some examples for nature’s balancing tendency:

  1. Sun is heating the earth on day and it is cooled on night. The heat comes to earth from sun on day and it goes out on night.
  2. Trees are emitting CO2 gas on night and they emit O2 (Oxygen) on day.
  3. In some areas of earth snow melts on summer season and again becomes snow on winter season.
  4. Heat flows from hot area to cold area to balance it.
  5. Air flows from high pressure area to low pressure area to balance it.

 

Air Flow:

          We need the fifth example to understand our concept.

 

 

     Always air will move from high pressure area to low pressure area itself.

Air Flow through straw:

See the figure below to understand our concept.

          As we saw in the figure, while we suck the air inside the straw the air inside the straw becomes less. So the pressure of the air becomes low. As the tendency of nature to balance the low pressure area by moving some air from high pressure area the air from outside area tries to go inside the straw. So the only way to go inside is through the water. So it forces the water on the surface to move inside the straw. Finally after forcing all water inside the straw it will go inside.

Oh! How sad it is that when the juice becomes empty and the air comes through our straw?

Note:

How does the pump work?

          When the motor moves the air upwards there is less air and so pressure is reduced. The high pressure outside air forces the water inside the pump to go there to balance the low pressure. So the water goes inside the motor and comes through the pipe but air never can enter into the pump if the water doesn’t become dry.

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