Elastic and Inelastic Materials
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Questions and Answers

Which of the following materials is an example of an elastic material?

  • Polyvinyl chloride (PVC)
  • Cartilage
  • Clay
  • Copper (correct)
  • What is a characteristic of elastic materials?

  • Deformation is temporary and reversible (correct)
  • Stress and strain are not directly proportional
  • Materials break or shatter under stress
  • Deformation is permanent and irreversible
  • Which of the following is an example of a brittle material?

  • Skin
  • Polyethylene
  • Glass (correct)
  • Rubber
  • What is a characteristic of inelastic materials?

    <p>Deformation is permanent and irreversible</p> Signup and view all the answers

    Which of the following materials is an example of a plastic material?

    <p>Clay</p> Signup and view all the answers

    Study Notes

    Elastic and Inelastic Materials

    Elastic Materials

    • Materials that return to their original shape and size after an external force is removed
    • Deformation is temporary and reversible
    • Stress and strain are directly proportional (Hooke's Law)
    • Examples:
      • Metals (e.g. copper, iron, aluminum)
      • Some plastics (e.g. polyethylene, polypropylene)
      • Rubber
      • Biological tissues (e.g. skin, muscle, bone)

    Inelastic Materials

    • Materials that do not return to their original shape and size after an external force is removed
    • Deformation is permanent and irreversible
    • Stress and strain are not directly proportional
    • Examples:
      • Clay
      • Soil
      • Some plastics (e.g. polyvinyl chloride, PVC)
      • Biological tissues (e.g. cartilage, tendon)
    • Subcategories:
      • Plastic materials: deform permanently under stress, but do not break (e.g. clay, putty)
      • Brittle materials: break or shatter under stress (e.g. glass, ceramics)

    Elastic Materials

    • Materials that return to their original shape and size after an external force is removed, exhibiting temporary and reversible deformation
    • Stress and strain are directly proportional, following Hooke's Law
    • Examples of elastic materials include metals (e.g. copper, iron, aluminum), certain plastics (e.g. polyethylene, polypropylene), rubber, and biological tissues (e.g. skin, muscle, bone)

    Inelastic Materials

    • Materials that do not return to their original shape and size after an external force is removed, undergoing permanent and irreversible deformation
    • Stress and strain are not directly proportional
    • Examples of inelastic materials include clay, soil, certain plastics (e.g. polyvinyl chloride, PVC), and biological tissues (e.g. cartilage, tendon)
    • Inelastic materials can be further classified into two subcategories:

    Plastic Materials

    • Deform permanently under stress, but do not break (e.g. clay, putty)

    Brittle Materials

    • Break or shatter under stress (e.g. glass, ceramics)

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    Description

    This quiz covers the properties and examples of elastic and inelastic materials, including Hooke's Law and applications in biology and engineering.

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