Young's Modulus Quiz

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| By Joanhuntley
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Quizzes Created: 3 | Total Attempts: 2,131
Questions: 16 | Attempts: 1,348

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Youngs Modulus Quiz - Quiz

For those of you who love all things physics and mathematics especially graphs that measure the strength of materials then this is the quiz for you. If you are prepared to test your knowledge, try it out. E movie.


Questions and Answers
  • 1. 

    What is the X axis used to plot?

    • A.

      Stress

    • B.

      Strain

    Correct Answer
    B. Strain
    Explanation
    The X axis is used to plot strain.

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  • 2. 

    The yellow line indicates which of the following?

    • A.

      Strength of ductility

    • B.

      Modulus of Elasticity

    • C.

      Pre-fracture stress load

    Correct Answer
    B. Modulus of Elasticity
    Explanation
    The yellow line indicates the Modulus of Elasticity. Modulus of Elasticity refers to the measure of a material's stiffness or rigidity. It represents the ratio of stress to strain within the elastic limit of a material. The yellow line in this context likely represents the relationship between stress and strain for a specific material, indicating its modulus of elasticity.

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  • 3. 

    The Y axis is used to plot which of the following

    • A.

      Stress

    • B.

      Strain

    Correct Answer
    A. Stress
    Explanation
    The Y axis is used to plot stress. Stress is a measure of the internal forces within a material, which can cause deformation or change in shape. By plotting stress on the Y axis, we can visualize how the material responds to external forces and determine its strength and ability to withstand deformation. The X axis is typically used to plot strain, which represents the amount of deformation that occurs in the material due to stress.

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  • 4. 

    Point B indicates which of the following?

    • A.

      Ultimate tensile strength

    • B.

      Maximum point of ductility

    • C.

      The maximum stress endured with minor permanent deformation when stress is removed

    • D.

      The maximum stress endured without permanent deformation when stress is removed

    Correct Answer
    D. The maximum stress endured without permanent deformation when stress is removed
    Explanation
    Point B on a stress-strain curve represents the yield point. At this point, the material can withstand a maximum stress without experiencing permanent deformation when the stress is removed. This means that the material can be stretched or deformed up to this point and still return to its original shape once the stress is released. It is important to note that beyond this point, the material may experience permanent deformation or even failure.

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  • 5. 

    Line F indicates the area of 

    • A.

      Elasticity

    • B.

      Ductility

    Correct Answer
    A. Elasticity
    Explanation
    Line F indicates the area of elasticity. Elasticity refers to the property of a material to regain its original shape after being deformed by an external force. In this context, the line F represents the range or region where the material can be stretched or compressed and still return to its original form once the external force is removed. This indicates the material's ability to withstand deformation and retain its elasticity.

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  • 6. 

    Line G indicates the area of 

    • A.

      Elasticity

    • B.

      Ductility

    Correct Answer
    B. Ductility
    Explanation
    Line G indicates the area of ductility. Ductility refers to the ability of a material to undergo plastic deformation without breaking. In other words, it measures how easily a material can be stretched or elongated without fracturing. Line G on a stress-strain curve represents the region where the material starts to exhibit ductile behavior. This means that the material is able to stretch and deform significantly before reaching its breaking point.

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  • 7. 

    Point D indicates the location of 

    • A.

      Ultimate tensile strength

    • B.

      Fracturing

    Correct Answer
    B. Fracturing
    Explanation
    Point D on the graph indicates the location of fracturing. This means that at this point, the material being tested has reached its ultimate tensile strength and has started to fracture or break apart. Fracturing typically occurs when the stress applied to a material exceeds its strength, causing it to fail and break. Therefore, Point D on the graph represents the point at which the material being tested has reached its breaking point and is undergoing fracturing.

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  • 8. 

    The area defined by the dotted line labeled A refers to

    • A.

      Modulus of elasticity

    • B.

      Modulus of ductility

    Correct Answer
    A. Modulus of elasticity
    Explanation
    The area defined by the dotted line labeled A refers to the modulus of elasticity. Modulus of elasticity, also known as Young's modulus, is a measure of a material's stiffness or ability to resist deformation under stress. The area under the stress-strain curve represents the energy absorbed by the material during deformation, and the modulus of elasticity is calculated by dividing stress by strain within the linear elastic region of the curve. Therefore, the area labeled A represents the modulus of elasticity.

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  • 9. 

    Point C indicates the location of 

    • A.

      Ultimate tensile strength

    • B.

      Fracturing

    Correct Answer
    A. Ultimate tensile strength
    Explanation
    Point C on a stress-strain curve represents the location of the ultimate tensile strength. This is the maximum stress that a material can withstand before it starts to deform plastically or fracture. At this point, the material is experiencing its highest level of stress and any further increase in stress will lead to permanent deformation or failure. Therefore, point C indicates the location where the material is at its strongest and is about to reach its breaking point.

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  • 10. 

    Force per unit area that results from a load applied to the material defines

    • A.

      Stress

    • B.

      Strain

    • C.

      Option 3

    • D.

      Option 4

    Correct Answer
    A. Stress
    Explanation
    Stress is the force per unit area that occurs when a load is applied to a material. It measures the internal resistance of the material to deformation and is calculated by dividing the applied force by the cross-sectional area. Stress is an important factor in determining the strength and stability of materials, as it can cause them to deform or fail under excessive loads.

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  • 11. 

    Material A demonstrates which of the following properties

    • A.

      Brittle

    • B.

      Strong but not ductile

    • C.

      Ductile

    • D.

      Plastic

    Correct Answer
    A. Brittle
    Explanation
    Material A is described as brittle because it does not exhibit the properties of being strong, ductile, or plastic. Brittle materials are characterized by their tendency to break or shatter when subjected to stress, without undergoing significant deformation. This means that Material A is likely to fracture or snap when subjected to force, rather than bending or stretching.

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  • 12. 

    Material B demonstrates which of the following properties

    • A.

      Brittle

    • B.

      Strong but not ductile

    • C.

      Ductile

    • D.

      Plastic

    Correct Answer
    B. Strong but not ductile
    Explanation
    Material B demonstrates the property of being strong but not ductile. This means that it can withstand a significant amount of force or stress without breaking, but it cannot be easily stretched or shaped into different forms. It may have high tensile strength but lacks the ability to be elongated or deformed without breaking.

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  • 13. 

    Material C demonstrates which of the following properties

    • A.

      Brittle

    • B.

      Strong but not ductile

    • C.

      Ductile

    • D.

      Plastic

    Correct Answer
    C. Ductile
    Explanation
    Material C demonstrates the property of being ductile. Ductility refers to the ability of a material to be stretched or drawn into a wire without breaking. This means that Material C can be easily deformed under tensile stress, allowing it to be shaped into various forms.

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  • 14. 

    Material D demonstrates which of the following properties

    • A.

      Brittle

    • B.

      Strong but not ductile

    • C.

      Ductile

    • D.

      Plastic

    Correct Answer
    D. Plastic
    Explanation
    Material D demonstrates the property of being plastic. This means that it can undergo permanent deformation without breaking. Unlike brittle materials, which break easily, plastic materials can be molded or shaped into different forms without fracturing. This property is often desirable in materials that need to be flexible or have the ability to withstand deformation without breaking.

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  • 15. 

    Which of the following is calculated by dividing the change in length of the material by the original length of the material

    • A.

      Stress

    • B.

      Strain

    Correct Answer
    B. Strain
    Explanation
    Strain is calculated by dividing the change in length of the material by the original length of the material. It is a measure of how much a material deforms under stress. By dividing the change in length by the original length, we can determine the amount of deformation or elongation that has occurred in the material. This calculation helps to quantify the amount of strain experienced by a material when subjected to a force or stress.

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  • 16. 

    Based on your understanding of Young's modulus, which of the following represents the value of Young's modulus in increasing order?

    • A.

      Steel, wood, fibreglass

    • B.

      Wood, kevlar, diamond

    • C.

      Titanium, glass, wood

    • D.

      Glass, carbon fibre, diamond

    Correct Answer
    B. Wood, kevlar, diamond
    Explanation
    Young's modulus is a measure of the stiffness of a material, indicating how much it will deform under stress. The higher the value of Young's modulus, the stiffer the material. In the given options, wood has the lowest value of Young's modulus, indicating that it is the least stiff among the three materials. Kevlar has a higher value than wood, making it stiffer than wood. Diamond has the highest value of Young's modulus among the three materials, indicating that it is the stiffest material. Therefore, the correct order of Young's modulus in increasing order is wood, kevlar, diamond.

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