Elasticity refers to the ability of a material to ___ after an external force is removed.

Regain its original size and shape

What is the significance of Young's modulus in materials science?

It measures a material's ability to tolerate compression or elongation relative to its length.

True or False: Elastic materials permanently deform after the removal of applied stress.

False: Elastic materials do not permanently deform; they return to their original shape.

Fill in the blank: The stress that causes a change in length is known as ___ stress.

Longitudinal

What does the yield point on the stress-strain curve indicate?

It marks the onset of plastic deformation, leading to permanent changes in the material's shape.

Riddle: I stretch and compress but never break my form. What quality do I possess?

Elasticity

Identify the three main types of stress.

Longitudinal stress, volume stress, and shear stress

The relationship between stress and strain for small deformations is described by ___ law.

Hooke's

What does the term 'elastic hysteresis' refer to?

The energy lost as heat during loading and unloading cycles.

True or False: Shearing strain occurs when the applied force changes the volume of a body.

False: Shearing strain alters the shape, not the volume, of a body.