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WorksheetsBERNOULLI'S PRINCIPLE
Total questions: 11
Worksheet time: 6mins
Diagram 9 shows two similar ping-pong balls suspended on strings of the same length. Which of the following diagrams shows the condition of the ping-pong balls when air is blown between them?
A ball which is thrown forward in a spin moves in a curve, as shown in the diagram. The curved path taken by the ball is due to
equilibrium of forces
Bernoulli’s principle
Archimedes’ principle
principle of conservation of momentum
Diagram 11 shows the roof of a house being lifted by strong winds. Which explains the above phenomenon?
Pascal’s Principle
Bernoulli’s Principle
Archimedes’ Principle
Newton’s First Law
Which apparatus uses Bernoulli’s principle?
Diagram 13 shows an object with an aerofoil shape placed in a wind tunnel. Which position, A, B, C or D, experiences the lowest pressure?
A
B
C
D
Diagram 9 shows a piece of paper clamped to a retort stand. When air at high velocity is blown on top of the paper, the edge of the paper
will lift up
will move down
does not move
Diagram 12 shows a student blows strongly between two candle flames. Why the candle flames approach one another when being blown?
Temperature between the candle flames becomes low
Pressure between the candle flames become low
Exist a vacuum area between the candle flames
Hot air at the bottom of the candles rises
Diagram 10 shows a boy blowing over a glass rod. Which principle explains the situation?
Pascal’s Principle
Bernoulli’s Principle
Archimedes’ Principle
Principle of conservation of momentum
Diagram 11 shows an aerofoil attached to the back of Formula One car. Which statement is correct when the car is moving fast?
Pressure at X is lower than at Y
Pressure at X and Y is the same
Velocity at X and Y is the same
Velocity at Y is greater than at X
Diagram 13 shows a top view of a sailboat against the direction of wind. Which direction A, B, C or D, the lift force acting on the sail?
A
B
C
D
Bernoulli's principle states that
pressure is transmitted equally in all directions in the fluid
buoyant force is equal to the weight of fluid displaced
when the velocity of a fluid increases, the pressure in the fluid decreases
