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

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  • 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.

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