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WorksheetsALL MATERIALS
Total questions: 25
Worksheet time: 13mins
Select the equation for density
Density = mass ÷ volume
Density = volume÷ mass
Density = mass x volume
The upthrust is equal to
The mass of displaced fluid
The weight of displaced fluid
The volume of displaced fluid
The weight of object
The mass of object
F=6πηrv is called
Stoke's Law
Hooke's Law
Newton's Law
Avogadro's Law
F=6πηrv is the formula for
drag force
upthrust
weight
friction
In the formula F=6πηrv, η stands for
viscosity
number of moles
number of molecules
runniness
temperature change
In the formula F=6πηrv, r stands for
Radius of object
viscosity
Diameter of object
Relative atomic mass
In the formula F=6πηrv, v stands for
speed
viscosity
volume
arbitrary value
Flow of fluids such that adjacent layers do not cross each other is called
turbulent
laminar
layered
smooth
Flow such that there are eddy currents etc.
Turbulent
Laminar
Layered
Smooth
For Stokes' Law to apply (select all that apply)
The object must be small
The object must be smooth
The object must be moving slowly
There must be laminar flow
The object must be spherical
A fluid which is very viscous is very
Runny like water
Gloopy like syrup
Dense like mercury
Low density like helium
Viscosity depends largely on
temperature
pressure
humidity
W is weight
F is drag
U is upthrust
For an object (e.g. a stone) falling at terminal velocity we say
W=F+U
W+F=U
W is weight
F is drag
U is upthrust
For an object (e.g. a bubble) rising at terminal velocity we say
W=F+U
W+F=U
What is the term for the force required per unit extension?
Stiffness
Strain
Stress
Young modulus
Which term describes the force applied per unit area?
Stress
Yield point
Strain
Elastic limit
What is the definition of Young modulus?
Stress that can be applied before a material breaks
Stress per unit strain
Force per unit extension
Change in length per unit original length
What is the term for a material that returns to its original shape when the force is applied?
Inelastic
Elastic
Breaking stress
Plastic
What is the maximum amount of force that can be applied such that the material is elastic?
Limit of proportionality
Breaking stress
Yield point
Elastic limit
What is the term for the ratio of change in length to the original length?
Stress
Strain
Elastic limit
Young modulus
What is the term for the point beyond which a material will not return to its original shape?
Elastic limit
Limit of proportionality
Yield point
Breaking point
State Hooke's Law
Force is directly proportional to extension (F=ke)
Force is directly proportional to extension (F=k/e)
Force is inversely proportional to extension (F=ke)
Force is inversely proportional to extension (F=k/e)
Beyond the limit of proportionality (SELECT TWO)
The material is no longer elastic
The material no longer returns to original length when force removed
Hooke's Law no longer applies
Force does not equal stiffness times extension
Breaking stress
The maximum force that can be applied before a material snaps
The maximum force per unit area that can be applied before a material snaps
The maximum force that can be applied before a material becomes inelastic
The maximum force per unit area that can be applied before a material becomes inelastic
To find the work done in extending a spring
Plot force on y - axis and extension on x-axis, and find the gradient.
Plot force on x - axis and extension on y-axis, and find the gradient.
Plot force on y - axis and extension on x-axis, and find the area under the graph.
Plot force on x- axis and extension on y-axis, and find the area under the graph.
