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If the weight of the water is less than the air pressure inside of the test tube.
Try this on your friends. Fill a glass to the brim with water. Place a piece of flat cardboard over the rim of the glass. Place your hand over the cardboard and invert the glass. Take you hand away and the water will remain in the glass. Air pressure again come into play here.
Try this one as well. Place a small lighted piece of paper in to an empty plastic bottle or tin can. The lighted paper will burn up the air in the container and will eventually go out. Because there is now a partial vacuum in the container the outside air pressure will try to fill the space and will gradually crush the bottle or can.
What else can I help you with?
Which scientist worked in the field of pressure?
Oxygen was discovered for the first time by a SwedishChemist, Carl Wilhelm Scheele, in 1772.
Does cold water stay colder in a plastic cup or a foam cup?
You're talking about holding the temperature of the water, right? As far as containing the liquid, they're about equal...but a styrofoam or double-wall plastic cup would hold temp better than a glass cup which would work better than a single-wall plastic cup.
How can you clean mold from a water jug inside?
If the mold inside a water jug is old or dried on, fill the jug with hot, sudsy water and let it stand for 20-minutes. Pour in 1/3 cup dry, uncooked rice and 1/3 cup baking soda. With the lid tightly closed, shake the bottle several time. The rice will loosen the mold and the baking soda will remove odors. Carefully open the lid, and pour the contents down the drain. Fill the jug half-full of hot water, a drop of dish soap, and shake well. Pour contents out and rinse thoroughly. Allow to air-dry upside down.
What objects have matter?
alot of objects have matter like the following: gas, water, hair, the sun, air. and sunshine doesnt have matter. air has matter because if you put an upside-down cup with a wad of paper in the bottom and you stick it in the water upside-down and when you take it out if you did it right then the paper is dry so that proves that air has matter
How many ounces in 1 cup water?
1 cup = 8 fluid ounces, regardless of what's in the cup. Even if it's empty.
How does water stay in a cup upside down?
When a cup is flipped upside down, the water remains inside due to air pressure. The pressure pushing down on the water is greater than the force of gravity pulling it out of the cup, creating a seal and preventing the water from falling out.
How does water not spill out when glass covered with card board upside down?
When filling a cup/glass with full water the card/lid will not stay up.
How does a cup of water stick to a piece of cardboard?
You get a peice of cardboard fill a half cup with water and push the cardboard on top and turn it upside down
When a cup is filled with water with a card on top of it is turned upside down the water does not fall out why?
When the cup is flipped upside down with the card on top, air pressure pushes up on the card, preventing the water from falling out. The air pressure inside the cup is greater than the force of gravity trying to pull the water out. This creates a seal that keeps the water in place until the card is removed.
When a cup of water is dropped does the water in the cup stays in the cup?
If a cup of water is dropped, the water will tend to stay inside the cup momentarily due to inertia. However, once the cup hits the ground and stops moving, the water will then spill out of the cup due to the lack of support from the container.
Describe an experiment to show air has pressure?
1. Take a cup, and fill it about halfway with water. 2. Next cut a piece of paper big enough to cover hole of cup 3. Flip cup upside down securing it with your hand (do this over a sink just in case) 4. Now let go of paper and observe. The paper should stay in place because the air pressure is pushing up against it.
What do the Dairy Queen attendant do when they give the blizzard to the customers?
They turn the cup upside down to show you how thick the ice cream is.
What is the purpose of gravity free water?
how does the gravity free water stay inside the cup
How much water do you add to one bag of cement?
Start with one gallon. Mix the cement with a shovel. Sometimes you may have to add a little more water. You do not want to get it to thin and soupy because it will cause it to loose strength. For best results fill a plastic cup with the mixed cement. Turn the cup upside down and lift the cup up. The final mix should stand close to half the height of the cup.
What rebus for soPUMPKup?
Pumpkin soup. (The word "pumpkin" is turned upside-down to form "pun", followed by "kup" which sounds like "cup".)
If you put a cup of chlorine in 14 inches of water how long will it stay in the water?
that deep-ends on the volume of water
Science projects for kids?
A good one for air pressure in physics is to do an experiment circus where they are in pairs and go around the classroom trying out up to 5 different experiments. One is filling a coke can a third full of water, then heating until steam rises from the can and then using a clamp turn it upside down and into a basin of cold water. Watch the can be crushed by the difference in pressure. Another is filling a plastic cup full of water and placing a piece of card on top then turn the cup upside down and the card will stick. Then, you could try and pull apart two hemispheres in a vacuum.
