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The straw moved up and down in a homemade barometer due to changes in atmospheric pressure. When the pressure increased, the liquid in the bottle pushed the straw up. When the pressure decreased, the straw moved down due to the weight of the atmosphere pressing down on the liquid in the bottle.
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Why does the drinking straw does not drip out when you press the top of the straw with your thumb or finger tip?
Your finger prevents air from entering through the top of the straw. As fluid moves down the straw it leaves a void in it's wake, one that is usually immediately filled by air. By preventing the air from entering the top of the straw, the fluid cannot move downwards because to do so would leave a vacuum space between your finger and the fluid; this "sucks" the fluid back in into place and prevents it from decending down the straw.
Why did the laying red straw move after placed the stirring rod that you ave rubbed?
The straw moved due to the attraction of opposite electrical charges. Rubbing the stirring rod created a build-up of static electricity, which then interacted with the charged particles in the straw, causing it to move.
When you drink with the help of a straw what forces the liquid up the straw?
When you suck on a straw, you create a vacuum in your mouth, and the atmospheric pressure pushes the liquid up the straw and into your mouth. The difference in pressure between the area inside the straw and outside is what causes the liquid to move upwards.
Why does the liquid move up the straw?
The liquid moves up the straw due to air pressure. When you suck on the straw, you create low pressure inside the straw. The higher air pressure outside the straw then pushes the liquid up to balance the pressure difference.
How does a straw oboe make sound waves?
A straw oboe makes sound waves by vibrating air inside the straw when it is blown into. The vibration of the air creates sound waves that travel through the straw and produce sound. By adjusting the length or thickness of the straw, you can change the pitch of the sound produced.
What atmospheric factors affect how a barometer works?
A Barometer primarily measures atmospheric pressure, although atmospheric pressure is affected by air temperature. http://www.answers.com/topic/barometer http://www.answers.com/topic/atmospheric-pressure?method=26&initiator=WANS
How does an aneroid barometer measure atmospheric pressure?
A barometer is an instrument used to measure atmospheric pressure. It can measure the pressure exerted by the atmosphere by using water, air, or mercury.An aneroid barometer is a barometer which measures pressure without using fluids!An aneroid barometer is somewhat different and uses a sealed chamber upon which the fluctuating atmospheric pressure acts. Through mechanical means a pointer is moved on a calibrated scale.
What happens to an aneriod barometer when air pressure changes?
When air pressure increases, the aneroid barometer contracts, causing the needle to move clockwise or indicate a higher pressure reading. Conversely, when air pressure decreases, the aneroid barometer expands, causing the needle to move counterclockwise or indicate a lower pressure reading.
Why does the drinking straw does not drip out when you press the top of the straw with your thumb or finger tip?
Your finger prevents air from entering through the top of the straw. As fluid moves down the straw it leaves a void in it's wake, one that is usually immediately filled by air. By preventing the air from entering the top of the straw, the fluid cannot move downwards because to do so would leave a vacuum space between your finger and the fluid; this "sucks" the fluid back in into place and prevents it from decending down the straw.
Why did the laying red straw move after placed the stirring rod that you ave rubbed?
The straw moved due to the attraction of opposite electrical charges. Rubbing the stirring rod created a build-up of static electricity, which then interacted with the charged particles in the straw, causing it to move.
When you drink with the help of a straw what forces the liquid up the straw?
When you suck on a straw, you create a vacuum in your mouth, and the atmospheric pressure pushes the liquid up the straw and into your mouth. The difference in pressure between the area inside the straw and outside is what causes the liquid to move upwards.
Why does the liquid move up the straw?
The liquid moves up the straw due to air pressure. When you suck on the straw, you create low pressure inside the straw. The higher air pressure outside the straw then pushes the liquid up to balance the pressure difference.
How to make a working model on automatic weather recording devices?
To make a device for recording weather, like a barometer, you need a balloon, scissors, tape, jar, straw, and rubber band. Stretch the balloon and cut off the top; the top half of the balloon should be secured to the jar with the rubber band. Tape the straw to the top of the jar and balloon so it is hanging off horizontally and mark the position of the straw on a piece of paper. The straw will move up and down depending on the weather and this information can be recorded.
How does a straw oboe make sound waves?
A straw oboe makes sound waves by vibrating air inside the straw when it is blown into. The vibration of the air creates sound waves that travel through the straw and produce sound. By adjusting the length or thickness of the straw, you can change the pitch of the sound produced.
What is the difference between how air pressure is indicated in a mercury barometer and an aneroid barometer?
Usually no difference at all. They can both move a pointer around a circular scale. The scale can be calibrated in both Inches of Mercury (InHg) or Millbars (Mb). An aneroid system can lend itself more easily to a digital display.
What happens as you full down the balloon at the bottom of the model?
As you pull down the balloon at the bottom of the model, the air pressure inside the balloon increases, causing the air to be pushed out through the straw. This creates a propelling force that makes the balloon move in the opposite direction.
Why does a soft drink rises when sucked with a straw?
As you suck on the straw air is removed from the inside of the straw and the air pressure within the straw is reduced. Once the straw's air pressure is reduced past atmospheric pressure of about 760 mmHg, the Patm forces the drink up the straw and into the sucker's mouth. Gases move from high to low pressure areas until equilibrium is reached.
