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BERNOULLI'S PRINCIPLE
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Learning Objective: 3.6 Understanding Bernoulli’s principle

Learning Outcome:
A student is able to:
• State Bernoulli’s principle
• Carry out an experiment to show the effect of Bernoulli’s principle using a Venturi tube
• Explain that a resultant force exists due to a difference in fluid pressure
• Describe applications of Bernoulli’s principle
• Solve problems involving Bernoulli’s principle

Prior Knowledge and Skills
Students have knowledge of the resultant force and pressure.

Scientific Skills
Observing, inferring and predicting.

Thinking Skills
Attributing, comparing and contrasting, grouping and classifying.

Moral and Scientific Value
• Having an interest and curiosity towards the environment.
• Having critical and analytical thinking.
• Being flexible and open-minded.

Scientific Skills
Observing, inferring and predicting.

Thinking Skills
Attributing, comparing and contrasting, grouping and classifying.

Moral and Scientific Value
• Having an interest and curiosity towards the environment.
• Having critical and analytical thinking.
• Being flexible and open-minded.







Set Induction (5-10 minutes)
-Show a picture of an aeroplane
-Ask students why aeroplane can fly in the sky?

Content (30-35 minutes)
-Introduce to the students Bernoulli's principle.
-Split students in a group of 5 to carry out the activities.
-Ask students relate the activity with Bernoulli's principle.

Experiment (35-40 minutes)
-Students get into group to carry out the experiments.
-Jot down the observation.

Discussion (10-15 minutes)
-Discuss applications of Bernoulli’s principle.

Summary (5-10 minutes)
-Give summary and ask student to try complete the exercise given.







Thursday, August 20, 2009

Activity 1



Instruction:
Ask Student holds two curved sheets of paper then blow .
Ask Student to blow a thin piece of paper.
Ask student to observe what happen to the paper .


Answer:
Picture (a) A person holds two curved sheets of paper The pressure between the sheets in picture (b) is lower than the surrounding pressure causing the sheets to get closer.
Picture (c) The same result is obtained by using a single sheet. The pressure above the sheet in picture (d) is lower than the pressure below, thus causing the sheet to lift.

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