Free Printable Chapter 7: Fluid Mechanics

Worksheets

Chapter 7: Fluid Mechanics

Total questions: 27

Worksheet time: 14mins

Name

Class

Date

Which of the following is not a phase of matter?

Gel

Gas

Solid

Liquid

Which of the following is characterized as fluid?

Ice

Plasma

Solid

Liquid or gas

What is density?

Density is mass per unit volume.

Density is the weight of an object.

Density is the volume of an object divided by its mass.

Density is the temperature of a substance.

Choose the correct SI unit for density.

kg/m³

kg/L

g/mL

g/cm³

If a car has 1000 kg mass, and its volume is 2 m³ , what is the car density?

250 kg/m³

1000 kg/m³

200 kg/m³

500 kg/m³

Steel wrench and steel nail have the same density. Is the statement correct?

Yes, the statement is correct.

No, the statement is incorrect.

The density of steel varies between objects.

Only the steel wrench has a different density.

What is definition for pressure in Physics?

Pressure is the volume of a gas.

Pressure is the force per unit area.

Pressure is the weight of an object.

Pressure is the temperature of a substance.

Which of the following units are not the units for pressure?

Meters (m) and kilograms (kg)

Atmospheres (atm)

Pascals (Pa)

Bar (bar)

Convert 10 N/m² to the unit of Pa.

10 Pa

10 N/m

100 Pa

1 N/m^2

10.

Given that the 5 Pa pressure acts on 2 m² area. Find the magnitude of force.

5 N

20 N

10 N

15 N

11.

Does pressure is the same in all direction at definite depth?

Yes, pressure is the same in all directions at a definite depth.

Pressure varies depending on the type of fluid at depth.

Pressure is only uniform in one direction at depth.

Pressure increases with depth in all directions.

12.

The pressure at depth h in the liquid can be calculated using which equation?

P = P0 + ρgh

P = ρg + h

P = P0 - ρgh

P = ρg/h

13.

Calculate the pressure if the density of the water is 1000 kg/m³ , the depth is 2 m and the gravity acceleration is 10 m/s² .

20000 Pa

30000 Pa

25000 Pa

15000 Pa

14.

What happen to the pressure in the liquid if the liquid density decrease?

The pressure in the liquid decreases.

The pressure in the liquid fluctuates randomly.

The pressure in the liquid increases.

The pressure in the liquid remains the same.

15.

Which of the following is the formula to calculate absolute pressure?

Absolute Pressure = Atmospheric Pressure - Gauge Pressure

Absolute Pressure = Gauge Pressure * Atmospheric Pressure

Absolute Pressure = Gauge Pressure + Atmospheric Pressure

Absolute Pressure = Gauge Pressure - Atmospheric Pressure

16.

The magnitude of the absolute pressure is 20 Pa and the magnitude of the atmospheric pressure is 10. Find the gas pressure magnitude.

5 Pa

15 Pa

25 Pa

10 Pa

17.

Which of the following is the definition for Pascal's Principle?

Pressure applied to a fluid is absorbed by the fluid.

A confined fluid cannot transmit pressure.

Pressure in a fluid decreases with depth.

Pressure applied to a confined fluid is transmitted equally in all directions.

18.

Which of the following is the application of Pascal's Principle?

Electrical circuits in homes

Thermal expansion in solids

Magnetic levitation systems

Hydraulic systems (e.g., hydraulic lifts, brakes)

19.

Choose the correct instrument to measure pressure.

Anemometer

Pressure gauge

Barometer

Thermometer

20.

Which of the following defines the best Archimedes' Principle?

An object floats if it is denser than the fluid it is in.

An object submerged in a fluid experiences a buoyant force equal to the weight of the fluid displaced.

Buoyant force is always greater than the weight of the object.

An object in a vacuum experiences no buoyant force.

21.

Which of the following equation can be used to calculate bouyant force?

F_b = ρ_fluid * A_surface * g

F_b = m_object * g

F_b = ρ_fluid * V_displaced * g

F_b = ρ_fluid * V_submerged * g

22.

What is fluid laminar flow?

Fluid laminar flow is a type of flow where fluid moves in parallel layers with no disruption between them.

Fluid laminar flow is characterized by turbulent mixing of layers.

Fluid laminar flow occurs only at high velocities.

Fluid laminar flow involves random movement of particles.

23.

Choose the correct equation of continuity.

A1 + V1 = A2 + V2

A1V2 = A2V1

A1/V1 = A2/V2

A1V1 = A2V2

24.

What is Bernoullis's Equation?

P + ρv² + 0.5gh = constant

P + 0.5ρv² + ρg = constant

P + ρgh + v = constant

Bernoulli's Equation: P + 0.5ρv² + ρgh = constant, where P is pressure, ρ is fluid density, v is fluid velocity, g is acceleration due to gravity, and h is height.

25.

What happen to pressure if the air speed drop?

Pressure remains constant regardless of air speed changes.

Pressure fluctuates randomly with air speed changes.

Pressure increases when air speed drops.

Pressure decreases when air speed drops.

26.

What is fluid viscosity?

Fluid viscosity is the measure of a fluid's resistance to flow.

Fluid viscosity is the color of a fluid.

Fluid viscosity is the density of a fluid.

Fluid viscosity is the temperature of a fluid.

27.

What is liquid surface tension?

Liquid surface tension is the force that causes the surface of a liquid to contract and resist external force, due to cohesive interactions among liquid molecules.

Liquid surface tension is the speed at which a liquid evaporates.

Liquid surface tension is the weight of a liquid per unit area.

Liquid surface tension is the temperature at which a liquid boils.

100 %

Chapter 7: Fluid Mechanics

Total questions: 27

Worksheet time: 14mins

Similar Resources on Wayground