answersLogoWhite

0


Want this question answered?

Be notified when an answer is posted

Add your answer:

Earn +20 pts
Q: Why the water in a drinking straw does not drip out when you press the top of the straw with your thumb?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

The water in a drinking straw does not drip out when you press the top of the straw with your thumb or finger tip?

there is no air


Why the water in a drinking straw does not drip out when you press the top of the straw with your thumb of finger tip?

Because under your thumb, inside the straw, there is now a vacuum which keeps the water in.


Why do the water in a drinking straw does not drip out when you press the top of the straw with your thumb or finger tip?

Because under your thumb, inside the straw, there is now a vacuum which keeps the water in.


Why would the water in your drinking straw not drip out when you press the top of the straw?

because it dosen't ok hello how are you doing ijvnfdkjnv nvkjdnkvjdnjkzxkvcm,xv,xmlksdlkvmlk jfksd jdoiewjfioejeijfie belive me or else


How do you operate a water filter straw to purify water for drinking?

You can put the straw into the water and then suck, the water will come out filtered.


The water in a drinking straw does not drip out when you press te top of the straw with your thumb or finger tip?

It's a matter of air pressure that acts on the water. When the straw is uncovered, there are two forces acting on the water inside. There is gravity, pulling the water down, and air pressure. The pressure is about the same on both ends of the straw, but on the top of the straw, the pressure pushes the water downward, and on the bottom of the straw, the pressure pushes upward. Both of the pressures are the same, so the net force is just the force of gravity pulling the water down and out of the straw. When you cover the top of the straw, you block the air from pushing down on the water. In this case, the only forces on the water are the air pressure pushing up, and gravity pulling down. However, the air pressure is a greater force than gravity, and keeps the water in the straw despite gravity's pull.


Is drinking out of a straw healthier for you?

No. It's the same as drinking right from the cup. Unless your out in the wilderness and you don't have clean water, you can get straws that filter your water.


Why does a straw hold water if you put your thumb over top of it?

When a thumb is placed over the hole in the top of the straw, it seals the entry way for air. When the straw is pulled out of the water, it is to be noted that a drop or two of water falls out of the bottom but no more falls. This is because when the water droplets fall, this creates more space in the air pocket in the top part of the straw. WIth more space the pressure decrease in the air pocket. In addition, gravity is working on the water inside the straw, but these two forces do not outweigh the force of atmospheric pressure outside, as a result, the water stays within the staw.


Do straw float in a glass of water?

Yes, plastic drinking straws will float in water.


Why water converts into ice in seconds using salt and fired straw?

Plain water freezes at 32 degrees F and salt water freezes at 35.42 degrees F so salt water will freeze faster. In the experiment a drinking straw is inserted into the water after one end of the straw is burned (fired) to seal it off. The straw acts as a hydrometer, which measures the density of water. It is said that after the straw is removed ice crystals form. This has been found not to be true.


What kind of milkshake does Miley Cyrus like?

she was coaght drinking a water melon milk shake with a bendey straw!


How do you remove hikups?

It is by; drinking Water Plugged Ears. One should drink the entire glass of water with a straw and block both of his/her ears.