Ocr B Physics Definitions

Front 1

Tough

Back 1

The maximum amount of energy a material can withstand without fracturing.

Front 2

Hard

Back 2

Can scratch or indent, and withstands being scratched.

Front 3

Brittle

Back 3

The tendency of a material to collapse or fracture with very little or no detectable formation beforehand.

Front 4

Ceramics

Back 4

Any various of hard, brittle, heat-resistant and corrosion-resistant materials by shaping and then firing a non-metallic mineral, such as clay, at a high temperature.

Front 5

Composites

Back 5

A combination of two or more materials, differing in form or composition on a macro scale.

Front 6

Breaking Stress

Back 6

The stress required to fracture or break a material, either by compression or tension.

Front 7

Yield Stress

Back 7

This is the level of stress at which a material will deform permanently.

Front 8

Tensile Strength

Back 8

This is the maximum strength that a material can withstand while being stretched or pulled before failing or breaking.

Front 9

Compressive Strength

Back 9

A force that attempts to flatten a material.

Front 10

Stress

Back 10

Stress is a measure of how strong a material is, defined by how much pressure the material can stand without undergoing some sort of physical change.

Front 11

Strain

Back 11

When a material is under stress, strain is the ratio of change in a dimension that is taking place.

Front 12

Young's modulus

Back 12

This is a measure of stiffness or elasticity.

Front 13

Ductile

Back 13

This simply means that the material can be drawn into wires.

Front 14

Malleable

Back 14

Can be bent or reshaped.

Front 15

Flexible

Back 15

Easily bent or shaped.

Front 16

Elastic Deformation

Back 16

A shape change in an object that is temporary as a result of stress.

Front 17

Plastic Deformation

Back 17

This is deformation that is permanent and occurs after excessive elastic deformation.