Exam-style question
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What does a steep slope in the initial linear region of a stress-strain graph indicate?.
- A.The material has a high Young's modulus.
- B.The material is ductile.
- C.The material is brittle.
- D.The material has low tensile strength.
Model answer
What a good answer should say
- The material has a high Young's modulus.
Explanation
Why this works
The evidence is the steep slope in the initial linear region of the stress-strain graph, which indicates a high ratio of stress to strain. This means that the material is very stiff and resists deformation.
The implication is that materials with high Young's modulus are suitable for applications requiring rigidity. Therefore, we conclude that a steep slope indicates a high Young's modulus.
Common mistake
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