Materials Key Terms Crossword Puzzle

QUESTIONS LIST:

• brittle: a brittle object will show very little strain before reaching its breaking stress
• density: the mass per unit volume of a material
• hookes: name of the law that states - the extension of an elastic object will be directly proportional to the force applied to it up to the object's limit of proportionality
• stiffness: a measure of how difficult it is to stretch a given object
• strain: tensile _ is the ratio of an object's extension to its original length.
• stress: tensile _ is the amount of force acting per unit area.
• pascal: unit of tensile stress
• elastic: if a material deforms with _ behaviour, it will return to its original shape when the deforming forces are removed.
• tensile: the opposite to compressive forces. this means to stretch
• gradient: on a graph of stress against strain this represents the young modulus of a material.
• plastic: a material that doesn't go back to its original shape after a force is removed is said to be this.
• yield: the point when the material suddenly starts to stretch without any extra load being added.
• deformation: this happens when a metal is stretched beyond its elastic limit.
• micrometer: a piece of equipment suitable for measuring the diameter of a wire.
• ruler: a piece of equipment suitable for measuring the length of a wire.