Forces in Fluid Quiz

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# Forces in Fluid Quiz - PowerPoint PPT Presentation

Forces in Fluid Quiz. Mr. Lewis’s 8 th Grade Science. Snowshoes enable a person to walk on deep snow because the snowshoes…. Decrease the person’s weight on the snow. Increase the area over which the person’s weight is distributed Increase the pressure on the snow

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### Forces in Fluid Quiz

• Decrease the person’s weight on the snow.
• Increase the area over which the person’s weight is distributed
• Increase the pressure on the snow
• Increase the buoyancy of the person
A unit of pressure is called a …
• Bernoulli
• Pascal
• Pound
• meter
Air pressure exerted equally on an object from different directions is …
• Balanced pressure
• Gravitational pressure
• Fluid pressure
• Constant pressure
Given that the air pressure outside your body is so great, why aren’t you crushed?
• Human skin is extremely strong.
• Earth’s gravity cancels out air pressure
• Pressure inside your body balances the air pressure outside your body.
• Inertia changes the pressure before it comes into contact with you.
Air pressure decreases as…
• Velocity increases
• Elevation increases
• Acceleration decreases
• Gravity increases
Water pressure increases as…
• Depth increases
• Gravity increases
• Force decreases
• Acceleration increases
One application of Pascal’s principle is…
• A hydraulic car lift
• The flight of an airplane
• A speedboat’s bottom slapping against the waves.
• The buoyancy shown by ducks and other waterfowl
What scientific rule describes why water squirts from a plastic bottle when squeezed?
• Bernoulli’s principle
• Archimedes’ principle
• Pascal’s principle
• Newton’s first law of motion
what does a hydraulic system do?
• Decrease pressure
• Increase velocity
• Multiply force
• Reduce inertia