WorksheetsFluid Dynamics
Total questions: 25
Worksheet time: 1hrs 29mins
The amount of water pressure that you experience in a pool depends on
your buoyancy
the size of the pool
the volume of water
how deep you are in the water
A partially submerged object floats when
the object's weight is equal to the buoyant force
the object's mass is equal to the buoyant force
the object's weight is greater than the buoyant force
the buoyant force is downward
Fluids move from areas of _____ pressure to areas of _____ pressure.
high, low
low, high
static, high
static, low
The amount of mass per unit of volume
density
mass
weight
pressure
An object has a mass of 15 grams and a volume of 12 cm3. What is the density of this object?
2.63 g/cm3
1.25 g/cm3
0.865 g/cm3
0.579 g/cm3
What is the equation to calculate pressure?
pressure = gravity ∕ weight
pressure = newtons ∕gravity
pressure = force∕ area
pressure = motion⁄ particles
Which statement best describes laminar flow?
a smooth pattern of flow
an irregular, mixing flow pattern
The strong attraction among the particlesthat form the surface of a liquid
Attraction between molecules of the same substance
Which statement best describes turbulent flow?
a smooth pattern of flow
an irregular, mixing flow pattern
The strong attraction among the particlesthat form the surface of a liquid
Attraction between molecules of the same substance
This equation is used when calculating ---
Bernoulli's principle
shear forces
Young's modulus
flow rate
What is happening at V2?
speed has increased
speed has decreased
speed has changed direction
In Bernoulli's equation, what does rho (ρ) represent?
pressure of the fluid
density of the fluid
height above the reference point
the fluid constant
Bernoulli’s equation is a form of the conservation of ------ principle.
mass
speed
momentum
energy
According to equation of continuity, A1V1 = A2V2 = constant. The constant is equal to:
Flow rate, Q
Volume of fluid, V
Mass of fluid, m
Density of fluid, ρ
A fluid is forced through a pipe of changing cross section as shown. In which section will the water have th highest pressure?
I
II
III
IV
The water pressure will remain the same
A fluid is forced through a pipe of changing cross section as shown. In which section will the water have the lowest pressure?
I
II
III
IV
The water pressure will remain the same
A fluid is forced through a pipe of changing cross section as shown. In which section will the water move the slowest?
I
II
III
IV
The water will move at the same speed
A fluid is forced through a pipe of changing cross section as shown. In which section will the water move the fastest?
I
II
III
IV
The water will move at the same speed
What are the SI units for density?
kg/m3
g/cm3
g/mL
kg/L
What is the SI unit for Pressure?
Pa
kPa
atm
psi
What is the Si unit for volume flow rate?
m3/s
m/s3
m2/s
m/s2
