Properties of Fluids Lowersixth Science Physics

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Quiz on density, pressure, surface tension and capillarity.

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Properties of Fluids Lowersixth Science Physics


Froggy Jumps Properties of Fluids Lowersixth Science PhysicsVersion en ligne Quiz on density, pressure, surface tension and capillarity. par YAKILI LMS 1 Density is defined as mass per unit of what? a Length b Force c Volume 2 What is the SI unit of density? a g/cm^3 b kg/m^2 c kg/m^3 3 Which quantity is needed to calculate pressure in a fluid? a Mass only b Volume only c Weight/Force per area 4 Pressure in a liquid increases with depth due to what? a Surface tension b Weight of the overlying liquid c Liquid color 5 Archimedes' Principle relates buoyant force to what? a Weight of displaced fluid b Pressure difference c Viscosity 6 A object floats if its density is less than the liquid's density. True or false? a False b True c Sometimes 7 What is the formula for liquid pressure at depth h in a fluid of density ρ? a P = γh b P = ρgh c P = ρVg 8 In a U-tube, comparing densities helps determine what? a Relative densities of liquids b Volume c Viscosity 9 Surface tension is the cohesive force at a liquid's ______. a Surface b Core c Bottom 10 Molecular theory of surface tension explains molecules at the surface have: a Random forces b More neighbours, outward pull c Fewer neighbours, net inward pull 11 Surface energy is the energy required to increase ______ at the surface. a Mass b Surface area c Volume 12 Capillarity occurs due to interplay of cohesion and what other force? a Momentum b Inertia c Adhesion 13 Excess pressure refers to pressure beyond atmospheric pressure in a: a Solid rod b Gas cylinder c Liquid column 14 A liquid meniscus formed in a narrow tube is typically what shape for water in glass? a Flat b Concave c Convex 15 Angle of contact is the angle between the liquid surface and the: a Liquid surface b Solid surface c Air 16 Capillary rise height in a capillary tube depends on surface tension and: a Interfacial contact and density b Tube color c Viscosity only 17 What method measures surface tension by capillary rise? a Drop weight method b Pendulum method c Capillary rise method 18 Which factor lowers capillary rise? a Wider tube b Increased surface tension c Higher density of liquid 19 Archimedes' principle helps determine whether an object will: a Vaporize b Compress c Sink or float 20 The unit of pressure commonly used is: a Newton (N) b Joule (J) c Pascal (Pa) 21 A liquid with high surface tension tends to form: a Irregular shapes b Flat sheets c Spherical droplets 22 In a U-tube experiment, equal heights indicate equal: a Pressure at liquid surfaces b Densities c Temperatures 23 What forces act along a liquid surface to create tension? a External forces b Buoyant forces c Cohesive forces 24 If a capillary rise is observed, the liquid wets the tube: a Low adhesion b No adhesion c Heightened adhesion 25 Density can be determined by measuring mass and: a Length b Area c Volume 26 Which quantity changes with depth causing pressure to rise? a Hydrostatic pressure b Thermal energy c Kinetic energy 27 Which relationship describes surface tension γ as energy per: a Unit volume b Unit area c Unit length 28 A liquid with low density will float on a liquid with: a Lower density b Higher density c Same density 29 What is the capillary action primarily driven by? a Weight of liquid b Adhesion to walls c Air pressure 30 Surface tension tends to minimize the liquid's: a Mass b Surface area c Volume 31 Which law connects buoyant force to displaced fluid weight? a Bernoulli's Principle b Archimedes' Principle c Pascal's Law 32 What kind of contact angle indicates complete wetting? a 90 degrees b Zero or very small angle c 180 degrees 33 Density comparison using a U-tube helps identify: a Liquid color b Which liquid is denser c Viscosity 34 What effect does surface tension have on droplets? a Keeps them spherical b Makes them flatten c Makes them explode 35 The capillarity phenomenon is most visible in: a Thin tubes b Thick plates c Open beakers 36 What determines the direction of capillary rise or fall? a Liquid pH b Wettability of the tube c Tube color 37 An object with density higher than the liquid will: a Sink b Float partially c Hover 38 What does a concave meniscus indicate about wetting? a No wetting b Liquid wets the surface c Negative pressure 39 Pressure at a depth h is proportional to: a Mass and height b Density and depth c Volume and depth 40 The units of density are typically: a N/m^2 b kg/m^3 c J/m^3 41 Surface energy is released when: a Volume increases b Surface area decreases c Temperature rises 42 Capillary rise height increases with: a Lower density b Higher surface tension c Wider tube 43 Which factor does not affect hydrostatic pressure? a Density b Liquid color c Depth 44 Which phenomenon explains soap film stability? a Buoyancy b Surface tension c Viscosity 45 Which property describes the force per unit length at a surface? a Viscosity b Density c Surface tension 46 An object partially submerged in a liquid experiences: a Buoyant force b Centripetal force c Magnetic force 47 Which factor increases capillary rise in a tube? a Greater surface tension b Lower density c Wider tube 48 Which equation expresses pressure in a fluid at depth? a P = P0 + ρgh b P = γh c P = ρg 49 What shape is a water surface in a narrow glass for a clean tube? a Convex b Concave c Flat 50 Which law connects buoyant force to weight of displaced fluid? a Pascal's Law b Archimedes' Principle c Bernoulli's

Properties of Fluids Lowersixth Science Physics

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Properties of Fluids Lowersixth Science PhysicsVersion en ligne

par YAKILI LMS

Density is defined as mass per unit of what?

What is the SI unit of density?

Which quantity is needed to calculate pressure in a fluid?

Pressure in a liquid increases with depth due to what?

Archimedes' Principle relates buoyant force to what?

A object floats if its density is less than the liquid's density. True or false?

What is the formula for liquid pressure at depth h in a fluid of density ρ?

In a U-tube, comparing densities helps determine what?

Surface tension is the cohesive force at a liquid's ______.

Molecular theory of surface tension explains molecules at the surface have:

Surface energy is the energy required to increase ______ at the surface.

Capillarity occurs due to interplay of cohesion and what other force?

Excess pressure refers to pressure beyond atmospheric pressure in a:

A liquid meniscus formed in a narrow tube is typically what shape for water in glass?

Angle of contact is the angle between the liquid surface and the:

Capillary rise height in a capillary tube depends on surface tension and:

What method measures surface tension by capillary rise?

Which factor lowers capillary rise?

Archimedes' principle helps determine whether an object will:

The unit of pressure commonly used is:

A liquid with high surface tension tends to form:

In a U-tube experiment, equal heights indicate equal:

What forces act along a liquid surface to create tension?

If a capillary rise is observed, the liquid wets the tube:

Density can be determined by measuring mass and:

Which quantity changes with depth causing pressure to rise?

Which relationship describes surface tension γ as energy per:

A liquid with low density will float on a liquid with:

What is the capillary action primarily driven by?

Surface tension tends to minimize the liquid's:

Which law connects buoyant force to displaced fluid weight?

What kind of contact angle indicates complete wetting?

Density comparison using a U-tube helps identify:

What effect does surface tension have on droplets?

The capillarity phenomenon is most visible in:

What determines the direction of capillary rise or fall?

An object with density higher than the liquid will:

What does a concave meniscus indicate about wetting?

Pressure at a depth h is proportional to:

The units of density are typically:

Surface energy is released when:

Capillary rise height increases with:

Which factor does not affect hydrostatic pressure?

Which phenomenon explains soap film stability?

Which property describes the force per unit length at a surface?

An object partially submerged in a liquid experiences:

Which factor increases capillary rise in a tube?

Which equation expresses pressure in a fluid at depth?

What shape is a water surface in a narrow glass for a clean tube?

Which law connects buoyant force to weight of displaced fluid?