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Chapter 11 forces in fluids ( kassie burkett)
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Gravity
Terms in this set (35)
Snowshoes enable a person to walk on deep snow because the snowshoes?
They distribute weight over a greater area
A unit of pressure is called a ?
Pascal
Air pressure exerted equally on an object from different directions is?
Balanced
Given that the air pressure outside your body is so great, why aren't you crushed?
Pressure
Air pressure decreases as elevation
Increases
Water pressure increases as depth
increases
which type of substance does Pascal's principle deal with ?
Fluid
One application of Pascal's principle is?
Hydraulic
What scientific rule describes why water squirts from a plastic bottle when it is squeezed?
Pascal
What does a hydraulic system do?
Multiply force
If you measure length width and height in cm and multiply them together what is the resulting unit?
Cm^3
What effect does a buoyant force have on a submerged object?
Upward force
If an object floats, the volume of displaced water is equal to the volume of ?
The volume of the object above the water
What scientific rule states that the buoyant force on an object is equal to the weight of the fluid displaced by the object.
Archimedes
When water fills a submarine's floatation tanks, the overall density of the submarine?
Increases
A ship stays afloat as long as the buoyant force is?
equal the ship weight
Pascal's principle states that when force is applied to a confined fluid, the change in pressure is transmitted
equal liquid
Smoke rises up a chimney partly because of
bernoulli's
Bernoulli's principle helps to explain
flight
The mass per unit volume of a substance is its
Density
A material that can easily flow is called a
fluid
What scientific rule states that the pressure exerted by a moving stream of fluid is less than the pressure of the surrounding fluid ?
Bernoulli's
What multiplies a force by transmitting it to a large surface area?
Hydraulics
The braking system on a car is an example of ?
Hydraulics, pascal
If you know the weight of an object that floats, you know that
Buoyant
Water pressure ________ with depth
doubles
A mountain climber might carry oxygen because the air pressure at the top of the mountain is _____ than the air pressure at the bottom
Less
pressure _______ as the area over which a force is distributed increases?
Decreases
The unit of pressure is called a?
Pascal
When force is applied to a confined fluid, an increase in _______ is transmitted equally to all parts of the fluid?
pressure
The buoyant force acts in the direction opposite the force of?
Gravity
A block of wood is placed in a jar of water. According to Archimedes principle, the ________ on the block is equal to the weight of the displaced fluid.
Buoyant
The greater the portion of a tennis ball beneath the surface of a liquid, the _______
greater
How do you find the volume of an irregularly shaped object?
Put it in water
According to Bernoulli's principle, the pressure in a moving stream of fluid is _______ than the pressure of the surrounding fluid.
less
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