Fluid Mechanics
Physics ⇒ Mechanics
Fluid Mechanics starts at 8 and continues till grade 12.
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See sample questions for grade 10
A balloon filled with helium rises in air. Explain why this happens.
Describe how a drinking straw works using the concept of pressure.
Describe the difference between laminar and turbulent flow.
Explain why a person feels lighter when swimming in water.
Which law explains why the pressure in a fluid increases with depth?
(1) Archimedes' Principle
(2) Pascal's Law
(3) Bernoulli's Principle
(4) Newton's First Law
Which of the following best explains why atmospheric pressure decreases with altitude?
(1) Gravity increases with altitude
(2) Air density decreases with altitude
(3) Temperature increases with altitude
(4) The Earth's radius increases with altitude
Which of the following equations represents the relationship between pressure, force, and area?
(1) Pressure = Force × Area
(2) Pressure = Force / Area
(3) Pressure = Area / Force
(4) Pressure = Force + Area
Which of the following is NOT a fluid?
(1) Air
(2) Water
(3) Ice
(4) Oil
Fill in the blank: According to Archimedes' principle, the buoyant force on an object is equal to the ________ of the fluid displaced by the object.
Fill in the blank: The density of a substance is defined as its mass per unit ________.
Fill in the blank: The instrument used to measure atmospheric pressure is called a ________.
Fill in the blank: The upward force that allows objects to float in a fluid is called ________.
True or False: Liquids are considered incompressible fluids.
True or False: The density of a fluid changes with temperature.
True or False: The pressure at the bottom of a container depends only on the height of the liquid column and not on the shape of the container.
True or False: The pressure at the same depth in different fluids is always the same.
