Grade 12 Physics: Fluids Worksheet
This worksheet covers fundamental concepts in fluid mechanics, including fluid properties, pressure, buoyancy, and fluid dynamics, suitable for Grade 12 physics students.
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Grade 12 Physics: Fluids Worksheet
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Read each question carefully and answer to the best of your ability. Show all your work for calculation problems.
1. Which of the following statements best defines a fluid?
A substance that has a definite shape but no definite volume.
A substance that can flow and change its shape.
A substance that resists deformation.
A substance with a fixed volume but variable shape.
2. According to Archimedes' principle, the buoyant force on an object submerged in a fluid is equal to:
The weight of the object.
The volume of the fluid displaced by the object.
The mass of the fluid displaced by the object.
The weight of the fluid displaced by the object.
1. The SI unit for pressure is the .
2. Bernoulli's principle states that as the speed of a fluid increases, its pressure .
3. Viscosity is a measure of a fluid's resistance to .
1. Liquids are generally more compressible than gases.
True
False
2. Pascal's principle applies only to incompressible fluids.
True
False
1. Explain the difference between laminar flow and turbulent flow.
2. Describe how a hydraulic lift works, making reference to Pascal's principle.
Observe the image below, which illustrates fluid flow. Identify one region where laminar flow is likely occurring and one region where turbulent flow is likely occurring. Label these regions.
1. A block of wood with a volume of 0.02 m³ and a density of 700 kg/m³ is placed in water (density 1000 kg/m³). Calculate the buoyant force acting on the block and determine what fraction of the block's volume is submerged.