Prove that air exert pressure
Answers
Answer:
As you blow into the funnel, the air moves faster and lowers the air pressure underneath the ball. Because the air pressure is higher above the ball than below it, the ball is pushed down into the funnel—no matter how hard you blow or which direction you point the funnel.
Explanation:
HOPE IT HELPFUL
Aim:
Aim: To prove that air exerts pressure.
Materials required:
glass tumbler, water, cardboard
Procedure:
1. Fill the glass tumbler with water up to its brim, such that there are no air bubbles inside it.
2. Keep a rectangular piece of cardboard on the mouth of the tumbler.
3. Giving the cardboard support with one hand, invert the tumbler.
4. Slowly remove your hand.
5. Note your observations.
6. Now, fill one-fourth of the tumbler with water and the remaining three-fourths with air.
7. Again, place the cardboard on the mouth of the tumbler. Invert the tumbler.
8. Note your observations.
Observations:
In the first case, you observe that the cardboard is stuck to the tumbler even when you remove your hand. This happened because the air pressure was acting upwards on the paper and the cardboard did not fall as shown in the picture. However, in the second case, the pressure of air inside the tumbler acted downwards and pushed the cardboard out and the water started running.