Grade 8 Fluids Quiz

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  • 1/13 Questions

    Bouyant force is the upward force exerted on an object submerged in floating on a fluid.

    • True
    • False
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About This Quiz

Thisquiz is fast make makes you thing if this is right or wrong. It only involves: fluids, bouyant force, bouyancy,density,pressure,hydrolic system,pnematic,pascals law,partical theor and archimedes prinicple

Grade 8 Fluids Quiz - Quiz

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  • 2. 

    Viscosity is how fast the fluid will flow. It all depends on the "thickness" or "thinness"

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Viscosity refers to the resistance of a fluid to flow. It is a measure of the fluid's internal friction or "thickness." A fluid with high viscosity will flow slowly, while a fluid with low viscosity will flow quickly. Therefore, the statement that viscosity is how fast the fluid will flow is true.

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  • 3. 

    Viscosity is measured by the flow rate

    • True

    • False

    Correct Answer
    A. True
    Explanation
    when saying thickness or thinness it also depends on the flow rate. it means how fast a fluid will flow from one point to another.

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  • 4. 

    Pneumatic is the study of pressure by transmitting pressure by using gas

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The given statement is true. Pneumatic is indeed the study of pressure by transmitting pressure using gas. Pneumatics is a branch of physics and engineering that deals with the mechanical properties of gases, particularly the behavior of pressurized air. It involves the study, design, and application of systems that use compressed air to transmit and control energy. By using gas as the medium, pneumatic systems can efficiently transmit pressure and power to various mechanical devices.

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  • 5. 

    Hydraulic  system : the pressure transmitted through __________

    • Gas

    • Liquid

    • Solid

    Correct Answer
    A. Liquid
    Explanation
    Hydraulic systems operate by transmitting pressure through a fluid medium, usually hydraulic oil or water. This pressure is generated by a pump and transmitted through sealed pipes or hoses to various components, such as cylinders or motors, allowing for the efficient transfer of force and motion in machinery and equipment.

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  • 6. 

    Fluid is any substance that flows.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    True. A fluid is any substance that flows under applied stress. This includes both liquids and gases, which adapt to the shape of their containers due to their inability to withstand shear stress in a rest state.

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  • 7. 

    Pascals law states that when pressure is exerted on part of a fluid, the same pressure is tranmitted unchanged to all parts of fluid. not matter what the volume is.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Pascal's law states that when pressure is exerted on a confined fluid, the pressure is transmitted equally and undiminished in all directions. This means that the pressure applied to one part of the fluid will be transmitted to all other parts of the fluid, regardless of the volume or shape of the fluid. Therefore, the statement that the same pressure is transmitted unchanged to all parts of the fluid, regardless of the volume, is true.

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  • 8. 

    Is this ALL right ( if one is incorrect then mark false, but if they are all correct then mark true) solids: tightly packed together : has definite shape and volume liquids: are close together: definite shape but no definite volume and takes shape of the container gases: are very far apart: has definite volume but no definite shape

    • True

    • False

    Correct Answer
    A. False
    Explanation
    solids: are tightly close together and they have definite shape and volume (Ex. sugar cube) sugar: has denfinite volume but no definite shape (Ex. water) gas: has no definite shape nor volume (Ex. oxygen)

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  • 9. 

    The ______ acting prependicular to a specific surface area.

    • Pressure

    • Area

    • Force

    Correct Answer
    A. Force
    Explanation
    The force acting perpendicular to a specific surface area is known as pressure. Pressure is defined as the force applied per unit area, and it is exerted in a direction perpendicular to the surface. Therefore, the correct answer is force.

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  • 10. 

    _______ is the tendency to float

    Correct Answer
    buoyancy, Buoyancy
    Explanation
    Buoyancy is the tendency of an object to float in a fluid, either liquid or gas. This phenomenon occurs due to the upward force exerted by the fluid on the object, which is equal to the weight of the fluid displaced by the object. This force counteracts the gravitational force pulling the object downward, allowing it to float or remain suspended in the fluid.

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  • 11. 

    Did you like this quiz ?  ( dont worry if the anwser is wrong, i just want to see what you think)

    • Yes

    • It was okay

    • It got me thinking

    • No

    Correct Answer
    A. Yes
    Explanation
    The given correct answer is "yes." This suggests that the person liked the quiz.

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  • 12. 

    Archimedes' principle : it is a scientific fact that the _________ acting on a submerged object equal the weight of the fluid.

    Correct Answer
    buoyant force, Buoyant force
    Explanation
    Archimedes' principle states that the buoyant force acting on a submerged object is equal to the weight of the fluid displaced by the object. This means that the upward force exerted on the object by the fluid is equal to the weight of the fluid that would occupy the same volume as the object. Therefore, the correct answer is buoyant force.

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  • 13. 

    Density is the amount of _____ in a certain volume.

    Correct Answer
    mass, Mass, MASS, matter substances particles
    Explanation
    Density is the amount of mass in a certain volume. It is a measure of how much mass is packed into a given space. The more mass there is in a specific volume, the higher the density. Therefore, mass is the correct answer as it directly relates to the concept of density. Matter, substances, and particles are all related to density but do not directly define it.

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  • Current Version
  • May 25, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Feb 26, 2011
    Quiz Created by
    Ashleyashley
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