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Bernoulli's Principle, , Pressure of air reduces when it moves fast. This principle was explained by a scientist named Bernoulli. Hence, , it is called Bernoulli's Principle., , Activities on Bernoulli's Principle, , , , , , , , Experiment Observation Explanation, Blowing the paper ball Instead of jerking | While blowing, the air near the neck of the bottle, from a side which is out, the paper moves which decrease the pressure there. So, the, placed at the neck of a ball enters in to air from the surroundings flows to the neck of the, bottle the bottle bottle which pushes the paper ball in to bottle., Blowing above paper strip | The paper strip When blow, the air pressure over the paper strip, which is kept close to rises decreases due to the motion of air. So, air from the, lower lip lower side flows up rising the paper strip., , , , Pushing the ball from the | The ball sticks to, funnel by blowing through | the funnel, the pipe connected to it., , While blowing, the air pressure inside the funnel, decreases. So, the air from the surroundings flow, towards the funnel which sticks the ball to the funnel., , , , , , , , , , , , Trying to put out the The candle flame, candle flame by blowing is not put out. The, air through the funnel flame comes close, , , , to the funnel., , The flame moves closer because the pressure there, reduces when air moves out fast. The newly coming, air to occupy that position moves the flame close to, the funnel.