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AP Physics 1
Unit 8: Fluids
8.5 Bernoulli's Equation
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Cards (69)
What does the principle of conservation of energy state for fluids?
Total energy remains constant
The density of the fluid must remain constant for the
conservation of energy principle
to apply.
True
What happens to kinetic energy when water flows uphill in terms of energy conservation?
Decreases as it gains potential energy
What happens to the kinetic energy of water as it flows uphill?
It decreases
Pressure in Bernoulli's Equation is measured in
Pascals
.
True
In Bernoulli's Equation, velocity is measured in
m/s
The acceleration due to gravity in Bernoulli's Equation is
9.8 m/s²
.
True
The inverse relationship between velocity and pressure is known as Bernoulli's
principle
What principle does Bernoulli's Equation relate to?
Energy conservation
Bernoulli's Equation includes terms for pressure, density, velocity, and
height
.
True
One key assumption of Bernoulli's Equation is that the fluid is
incompressible
Bernoulli's Equation assumes the flow is along a streamline.
True
The conservation of energy for fluids relates kinetic and potential energies mathematically using density, velocity, and
height
Order the types of energy involved in the conservation of energy for fluids:
1️⃣ Kinetic energy
2️⃣ Potential energy
Bernoulli's Equation relates pressure, kinetic energy, and potential energy in a fluid
flow
What does density represent in Bernoulli's Equation?
Mass per unit volume
What does height measure in Bernoulli's Equation?
Vertical distance from a reference level
What happens to pressure when velocity increases in a fluid flow?
Pressure decreases
Arrange the relationships between the variables in Bernoulli's Equation
1️⃣ Pressure is inversely proportional to velocity
2️⃣ Velocity is inversely proportional to pressure
3️⃣ Height is directly proportional to potential energy
4️⃣ Height is inversely proportional to kinetic energy
What is Bernoulli's Equation a statement of?
Energy conservation
What does velocity measure in Bernoulli's Equation?
The speed of the fluid
The conservation of energy principle for fluids states that the total energy within a closed system remains
constant
What are the key assumptions in the conservation of energy principle for fluids?
Constant fluid density and a closed system
What is the vertical distance from a reference level called in Bernoulli's Equation?
Height
The variable '
ρ
\rho
ρ
' in Bernoulli's Equation represents density
Bernoulli's Equation
is a statement of energy conservation for fluids in
motion
Match the variable in Bernoulli's Equation with its symbol:
Pressure ↔️ P
Density ↔️
ρ
\rho
ρ
Velocity ↔️ v
Height ↔️ h
Acceleration due to gravity ↔️ g
The acceleration due to gravity, denoted by 'g', has a value of
9.8
m/s².
Match the variable with its description:
Pressure ↔️ The force per unit area exerted by the fluid
Density ↔️ The mass per unit volume of the fluid
Velocity ↔️ The speed of the fluid
What are the units of pressure in Bernoulli's Equation?
Pascals
The velocity in Bernoulli's Equation is measured in meters per second.
True
Bernoulli's equation describes the relationship between pressure, velocity, and
height
in a fluid flow.
An increase in velocity leads to a decrease in pressure according to Bernoulli's principle.
True
The relationship between pressure, velocity, and height in Bernoulli's equation can be summarized as inversely proportional for pressure and
velocity
.
Pressure and velocity are inversely proportional according to
Bernoulli's Equation
.
True
In Bernoulli's Equation, height is directly proportional to
potential
energy.
How does the curved shape of an airplane wing generate lift according to Bernoulli's principle?
Creates pressure difference
Siphons rely on
Bernoulli's
equation to function.
True
Steps to solve problems using Bernoulli's Equation:
1️⃣ Apply the principle of conservation of energy for fluids
2️⃣ Substitute known values into the equation
3️⃣ Solve for the unknown variable
Bernoulli's Equation can be used to analyze
fluid flow
in pipes.
True
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