This scientific rule describes why water squirts from a plastic bottle when it is squeezed
One application of Pascal's principle is
a hydraulic car lift
Which type of substance does Pascal's principle deal with?
Water pressure increases as
Air pressure decreases as
As the elevation increases, what happens to the air pressure?
A unit of pressure is called a
Snowshoes enable a person to walk on deep snow because the snowshoes
increase the area over which the person's weight is distributed
What does a hydraulic system do?
Which of the following is true of the buoyant force?
It acts in the upward direction
What effect does a buoyant force have on a submerged object?
It causes a net force acting upward on the object
What scientific rule states that the buoyant force on an object is equal to the weight of the fluid displaced by the object?
When water fills a submarine's flotation tanks, the overall density of the submarine
A ship stays afloat as long as the buoyant force is
equal to the ship's weight
Pascal's principle states that when force is applied to a confined fluid, the change in pressure is transmitted
equally to all parts of the fluid
A pitcher is able to throw a curve ball partly because of
Bernoulli's principle helps to explain
What must a submarine do in order to rise back to the surface when it is deep under water?
An object that is more dense than the fluid in which it is immersed will
Which scientific rle describes why water squirts from a bottle when it is squeezed?
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?
Which of these multiplies a force by transmitting it to a large surface area?
a hydraulic system
The braking system on a car is an example of
a hydraulic system
What 2 factors does pressure depend on ?
force and area
Water pressure ________ with depth.
During high winds, the windows in a building may bulge outward because the air pressure inside the building is ____________ the air pressure outside the building.
A mountain climber might carry oxygen because the air pressure at the top of a large mountain is _________ the air pressure at the bottom.
How do fluids exert pressure?
Particles of fluids exert forces when colliding with surfaces
The lava in a lava lamp is able to rise and fall partly due to