ARC221-Building Materials I: Iron and Steel Differences
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Questions and Answers

What is the main difference between iron and steel?

  • Iron is stronger than steel in terms of yield and tensile strength
  • Steel occurs naturally, while iron is an alloy of iron and carbon
  • Steel is weaker than iron in the domains of yield and tensile strength
  • Iron occurs naturally, while steel is an alloy of iron and carbon (correct)

    • How are early civilizations designated in relation to their materials development?

  • By the level of their agricultural development
  • By the level of their materials development (correct)
  • By the level of their political organization
  • By the level of their transportation systems

    • What did the earliest humans have access to in terms of materials?

  • A limited number of naturally occurring materials (correct)
  • Only advanced materials like steel
  • Synthetic materials only
  • Metals only

    • What were some of the new materials discovered by early humans?

    <p>Pottery and various metals</p> Signup and view all the answers

    How were the properties of materials altered by early humans?

    <p>By heat treatments and addition of other substances</p> Signup and view all the answers

    What is the primary focus of materials science?

    <p>Investigating the relationships between the structures and properties of materials</p> Signup and view all the answers

    What is the role of a materials engineer?

    <p>Creating new products using existing materials</p> Signup and view all the answers

    What has empowered scientists in recent times to fashion the characteristics of materials?

    <p>Understanding the relationships between the structural elements of materials and their properties</p> Signup and view all the answers

    What is the basis for subdividing the discipline of materials science and engineering into subdisciplines?

    <p>Investigating the relationships between the structures and properties of materials</p> Signup and view all the answers

    What does the structure of a material usually relate to?

    <p>The arrangement of its internal components</p> Signup and view all the answers

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