Where do you hear the word pressure used in everyday life?
What is pressure?
Question 2
Where do you hear the word density used in everyday life?
What is density?
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Pressure
Slide 4 - Slide
Density
Slide 5 - Slide
Exercise
A woman weighing 76 kg is wearing high heels to the zoo. She goes to see an elephant with a mass of 5221 kg. One of her heels has a total area of 8.4 cm2. One of the elephants feet has an area of 301 cm2.
a) Without making calculations, make an estimation of wether the elephant or the women applies a greater pressure to the ground. Write down your reasoning.
b) Calculate the pressure the women applies to the ground.
c) Calculate the pressure the elephant applies to the ground.
Slide 6 - Slide
Pressure — A demonstration
Slide 7 - Slide
Exercise
In pairs of two
You may use one phone per pair
What is pressure?
What is the formula for pressure?
Where and how is pressure made use of in daily life or technology?
What is density?
What is the formula for density?
Where and how is density made use of in daily life or technology?
Slide 8 - Slide
A demonstration
Bernoulli's principle
Slide 9 - Slide
Bernoulli's principle
Moving air applies less pressure then stationary air.
Slide 10 - Slide
Bernoulli's principle
Moving air applies less pressure then stationary air.
