33 terms

This set covers Abeka Physics Chapter 5: "The Solid State" (pages 68-79).

elasticity

the ability of solids to recover their original shape after being deformed by an external force

True

True of False: **All** solids have the property of elasticity.

rigidity

term for the tendency to resist flexing or deforming

elastic limit

term for the point past which a material will not recover its original shape

resilience

term for the amount of deformation required to bring a material to its elastic limit

plasticity

term for the maximum amount of relative deformation that may be permanently imposed upon a material

ingot

term for a large, solid bar of newly refined metal

mechanical working

term for the processes used to impose desired shapes upon ingots

dies

term for two half-molds that enclose a desired shape when they are brought together

forging

process that involves squeezing or pounding metal with great force between two dies

rolling

process that involves pressing down a metal by a series of paired, heavy rollers into a continuous sheet

malleability

the property of a metal that allows it to be rolled or hammered into a sheet

drawing

process in which metal is pulled through a single die into a continuous ribbon with the same cross-sectional shape as the interior surface of the die

ductility

the property of a metal that allows it to be drawn into wire

cohesion

term for the attractive force between particles of the same kind

tensile force

term for the stretching or compressing force of the load

restorative force

term for the force that acts against the tensile force

Hooke's Law

law that states that the force of a wire pulling upward is proportional to its displacement downward, and that the restorative force acts in the opposite direction of the displacement

stress

term for the deformative tensile force per unit cross-sectional area

stress = F/A

formula for stress

strain

term for the relative amount of deformation-- or the ratio of change compared to the original length

tensile stress and tension

two terms for the effect due to pulling a rod along its length

Young's modulus

"Y" represents ____ _____.

negative

Compression forces are **always** _____.

proportional limit

term for the point at which a wire's restorative force is no longer a linear function of elongation and Hook's law breaks down

elastic limit

term for the maximum stress a material can sustain without being permanently deformed

ultimate tensile strength

term for the maximum stress a material can sustain without brreaking

breaking point

term for the maximum strain tolerated by a wire

brittle

Objects that break suddenly under a load instead of deforming first are described as ____ objects.

equilibrium

term for the distance at which there is no net attraction or repulsion

shear

term for the combination of two oppositely directed forces along parallel lines of action

volume

The stress that causes bulk deformation is called ____ stress.

True

True or False: There is **no** elastic limit **or** ultimate strength for volume stress.