WorksheetsFluids and forces
Total questions: 20
Worksheet time: 10mins
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
increase the buoyancy of the person
A unit of pressure is called a
bernoulli
pascal
pound
meter
Air pressure decreases as
velocity increases
elevation increases
acceleration decreases
gravity increases
Water pressure increases as
depth increases
gravity decreases
force decreases
acceleration increases
Which type of substance does Pascal's principle deal with?
solids
fluids
powders
metals
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
Which of the following is true of the buoyant force?
it acts in the downward direction
it acts with the force of gravity
it acts in the upward direction
ti makes an object feel heavier
If an object floats, the volume of displaced water is equal to the volume of
the entire object
the portion of the object that is above water
the portion of the object that is submerged
exactly half of 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?
Archimedes' principle
Pascal's principle
Bernoulli's principle
Newton's third law of motion
A ship stays afloat as long as the buoyant force is
less than the ship's weight
equal to the ship's weight
less than the ship's speed
greater than the ship's speed
Pascal's principle states that when force is applied to a confined fluid, the change in pressure is transmitted
only to the area where the pressure is applied
equally to all parts of the fluid
to any weakness in the fluid's container
in the direction of the buoyant force
Smoke rises up a chimney partly because of
Archimedes' principle
Pascal's principle
Bernoulli's principle
Newton's third law of motion
The mass per unit volume of a substance is its
density
buoyancy
weight
fluid pressure
An object that is more dense than the fluid in which it is immersed will
sink
rise
neither rise nor sink
sink at first, than rise slowly
Pressure can be measured in units of
newtons
newtons per square meter
newtons per centimeter
newtons per cubic centimeter
What scientific rule states that the pressure exerted by a moving stream of fluid is less than the pressure of the surrounding fluid?
Archimedes' principle
Pascal's principle
Bernoulli's principle
Newton's third law of motion
Which of these multiplies a force by transmitting it to a large surface area?
a hydraulic system
a buoyant force
a balanced pressure
a force pump
The braking system on a car is an example of
a hydraulic system
buoyancy
Bernoulli's principle
Newton's third law of motion
In which direction is fluid pressure directed?
Up
Down
Sideways
In all directions
Which of the following would not affect the level at which a cargo ship floats in a body of water?
The depth of the water
The mass of the ship’s cargo
The volume of the ship
The density of the ship’s material
