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Which principle explains how the buoyant force acting on an object changes with the weight of the fluid it displaces.
Archimedes' principle
Which changes as a solid object moves downward within a fluid? density, pressure, mass, volume
Pressure
Which principle states that when pressure is applied to a fluid in a closed container, the pressure increases by the same amount everwhere in the container?
Pascal's principle
Which principle states that when the speed in a fluid increases, the pressure decreases?
Bernoulli's principle
Which principle describes how the input force affects the fluid pressure at different points in the hydraulic lift?
Pascal's principle
When an input force is applied above point A, which is true of the fluid pressure at points A, B, and C?
The fluid pressure increases the same amount at all points
Why are drag forces greater in water than they are in air?
Water is more dense than air.
The figure shows an aquarium filled with water. Four cubes made out of different materials have been placed in the aquarium. For which object is the buoyant force acting on it equal to the object's weight?
C
Which characteristics determine the density of a fluid?
Mass and Volume
The picture shows a side view of a mountain that extends below the water's surface. At which point would the pressure be the greatest?
D
The same force is applied to two areas that differ in size. Which is true of the pressure over those areas? The pressure on the smaller area is greater. OR The pressure on the larger area is greater?
The pressure on the smaller area is greater.
If a leaf enters a drainpipe and the pressure in the water increases from 10 Pa to 30 Pa. What happens to the leaf's speed?
It decreases
In the diagram, how large a force is applied by the piston on the right?
80 N
True or False: A boat floats if its overall density is less than water.
True
Jospeh weighs 290 pounds and displaces 300 N of water as he swims in a pool. What is the buoyant force on Joseph?
300 N upward
In the diagram of the beach ball floating on water, what force does the blue arrow represent?
buoyant force
Which of these has the greatest pressure applied to it from the surrounding fluid? a fish swimming 20 meters below the surface, a mountain climber at an altitude of 4,400 meters, a hawk flying 300 meters above sea level
a fish swimming 20 meters below the surface
What pressure does Adam apply to a ball of dough when he pushes on it with a 25N force? The area of his hand is .01m².
2,500 Pa
If you poured the flollwing fluids into a container, which would float on top? maple syrup with a density of 1.33g/cm³, seawater with a density of 1.03g/cm³, olive oil with a density of .9g/cm³, water with a density of 1.0g/cm³
olive oil
Which is not a fluid? ice, water, milk, helium
ice
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