Materials Top Trumps

8/10/2019 Materials Top Trumps

1/9

1. Divide the cards up equally among the

group2. Take it in turns to read out ONE property.

The highest value wins the other cards.3. Answer ALL questions at the bottom of

each card


2/9

Density7,135kgm -3

Malleability 6

Hardness 2.5 Ductility 5

Youngmodulus

96 GPa Flexibility 2

Strength 200x106 Pa Toughness 8

Density8,940kgm -3

Malleability 7

Hardness 3 Ductility 9

Youngmodulus

120GPa

Flexibility 3

Strength 220x106 PaToughness 6

Density1,950kgm -3

Malleability 4


Youngmodulus

181x10 9 Nm -2

Flexibility 2

Strength4300

x10 6PaToughness 9

Density11,340kgm -3

Malleability 9


Youngmodulus

16x10 9

Nm -2Flexibility 4

Strength100

x10 6PaToughness 4

1. QUESTION: What is the definition of a brittlematerial?

2. QUESTION: How is the stiffness of a materialcalculated?

3. QUESTION: How is stored elastic energycalculated from a graph of Force applied (N) overextension of a material (m)?

4. QUESTION: What is hysteresis? How would thisappear in a graph?

Zinc Copper

CarbonFibre

Lead


3/9

Density8000kgm -3

Malleability 6


Youngmodulus

110GPa

Flexibility 2

Strength 2000x10 6 Pa Toughness 8

Density 1 kgm -3 Malleability 0


Youngmodulus

1 MPa Flexibility 0

Strength 0.4x106

PaToughness 1

Density 4,500kgm -3 Malleabilit

y3


Youngmodulus

310x10 9 Nm -2

Flexibility 2

Strength 10.4PGa Toughness 9

Density7,800kgm -3

Malleability 6


Youngmodulus

210x109 Pa

Flexibility 3

Strength3x10 6

PaToughness 7

5. QUESTION: Explain why the units of the YoungModulus can be either Nm -2 or Pa.

6. QUESTION: Why might a material be describedas tough?

7. Task: Draw a stress strain graph for titanium. 8. Question: The compressive strength of marble is112MPa. If a marble column holding up a roof of a templeis a cylinder supporting 1.43x10 7N, what is its minimum

diameter?

StainlessSteel

Aerogel

Titanium Iron


4/9

Density1,100kgm -3

Malleability 10


Youngmodulus

0.01x10 9 Nm -2

Flexibility 7

Strength 15x106

Pa Toughness 7

Density2.7x10 3 kgm -3

Malleability 0


Youngmodulus

9.2Nm -2 Flexibility 2

Strength 1x106

PaToughness 2

Density3.5x10 3

kgm -3 Malleabilit

y0


Youngmodulus

1220x10 9 Nm -2

Flexibility 0

Strength1600x10 6

PaToughness 10

Density 10 kgm -3 Malleabilit

y2


Youngmodulus

1000GPa

Flexibility 1

Strength 130 GPa Toughness 10

9. QUESTION: How is Youngs Modulus calculated? 10. TASK: Draw a stress-strain graph and plot twolines of different stiffness

11. QUESTION: Why is glass said to be brittle? 12. QUESTION: Name 3 malleable materials andstate the definition of malleable.

GrapheneDiamond

Rubber Graphite


5/9

Density510

kgm -3 Malleability 2


Youngmodulus

9 GPa Flexibility 4

Strength 40X106

Pa Toughness 5

Density2.8x10 3

kgm -3 Malleability 1


Youngmodulus

80x10 9 Nm -2

Flexibility 2

Strength 33x106

PaToughness 8

Density8520kgm -3

Malleability 6


Youngmodulus

100x109 Nm -2

Flexibility 2

Strength550x10

6 PaToughness 8.5

Density2000kgm -3

Malleability 3


Youngmodulus

14 x10 9 Nm -2

Flexibility 4

Strength130x10

6 PaToughness 8

13. QUESTION: What are the units of tensile strain? 14. Task: Draw a stress-strain graph for glass

15. QUESTION: What is necking and when does itoccur in material tests?

16. QUESTION: How is compressive stresscalculated and what are the units?

Pine wood Glass

Brass Bone


6/9

Density1050kgm -3

Malleability 8


Youngmodulus

7,500Nm -2

Flexibility 8

Strength 20 MPa Toughness 1

Skin

Density1120kgm -3

Malleability 9


Youngmodulus

2 GNm -2 Flexibility 8

Strength 580x10 6 Pa

Toughness 9

Density75kgm -

3 Malleability 2


Youngmodulus

3.5x10 9 Nm -2

Flexibility 5


Density3970kgm -3

Malleability 0


Youngmodulus

435x109 Nm -2

Flexibility 0

Strength 1.9 GPa Toughness 9

Sapphire

17. QUESTION: Define shear stress and give anexample of it.

18. QUESTION: Is a material that is brittle alsoweak?

19. QUESTION: What can be said to be theopposite of brittleness?

20. QUESTION: ________ materials showresistance to plastic deformation

Polystyrene

Nylon


7/9

Density2,400kgm -3

Malleability 0


Youngmodulus

85 GPa Flexibility 1


Density2,700kgm -3

Malleability 6


Youngmodulus

69GNm -2

Flexibility 7

Strength 50x106

PaToughness 7

Density1,300kgm -3

Malleability 8


Youngmodulus

300MPa

Flexibility 10

Strength 1 GPa Toughness 9

Density 0.07 kgm -3 Malleability 7


Youngmodulus

Nm -2 Flexibility 9

Strength380x10 6

PaToughness 8

21. QUESTION: Whats the definition ofcompressive strength?

22. QUESTION: Whats the definition ofcompressive strain?

23. QUESTION: Are all malleable materials tough?Explain.

24. QUESTION: Give the material propertiesnecessary for a) Aeroplane wings b) Electrical wiringand c) Building construction

Spider silk Human Hair

Concrete Aluminium


8/9

QUESTIONS1. QUESTION: What is the definition of a brittle material?

2. QUESTION: How is the stiffness of a material calculated?

3. QUESTION: How is stored elastic energy calculated from a graph of Forceapplied (N) over extension of a material (m)?

4. QUESTION: What is hysteresis? How would this appear in a graph?

5. QUESTION: Explain why the units of the Young Modulus can be either Nm -2 or Pa.

6. QUESTION: Why might a material be described as tough?

7. Task: Draw a stress strain graph for titanium.

8. Question: The compressive strength of marble is 112MPa. If a marblecolumn holding up a roof of a temple is a cylinder supporting 1.43x10 7N,what is its minimum diameter?

9. QUESTION: How is Youngs Modulus calculated?

10. TASK: Draw a stress-strain graph and plot two lines of different stiffness

11. QUESTION: Why is glass said to be brittle?

12. QUESTION: Name 3 malleable materials and state the definition ofmalleable.

13. QUESTION: What are the units of tensile strain?

14. Task: Draw a stress-strain graph for glass

15. QUESTION: What is necking and when does it occur in material tests?

16. QUESTION: How is compressive stress calculated and what are the units?

17. QUESTION: Define shear stress and give an example of it.

18. QUESTION: Is a material that is brittle also weak?

19. QUESTION: What can be said to be the opposite of brittleness?20. QUESTION: ________ materials show resistance to plastic deformation

21. QUESTION : Whats the definition of compressive strength?

22. QUESTION : Whats the definition of compressive strain?

23. QUESTION: Are all malleable materials tough? Explain.

24. QUESTION: Give the material properties necessary for a) Aeroplane wingsb) Electrical wiring and c) Building construction


9/9

ANSWERS1. QUESTION: A lot of stress for little strain. Shatters upon larger applied

forces?

2. QUESTION: F = kx, where k is the stiffness

3. QUESTION: Area under graph = Nm = Joules

4. QUESTION: What is hysteresis? How would this appear in a graph?

5. QUESTION: Explain why the units of the Young Modulus can be either Nm -2 or Pa.

6. QUESTION: Why might a material be described as tough?

7. Task: Draw a stress strain graph for titanium.

8. Question: The compressive strength of marble is 112MPa. If a marblecolumn holding up a roof of a temple is a cylinder supporting 1.43x10 7N,what is its minimum diameter ? 0.4m

9. QUESTION: How is Youngs Modulus calculated?

10. TASK: Draw a stress-strain graph and plot two lines of different stiffness

11. QUESTION: Why is glass said to be brittle?

12. QUESTION: Name 3 malleable materials and state the definition ofmalleable.

13. QUESTION: What are the units of tensile strain?

14. Task: Draw a stress-strain graph for glass

15. QUESTION: What is necking and when does it occur in material tests?

16. QUESTION: How is compressive stress calculated and what are the units?

17. QUESTION: Define shear stress and give an example of it.

18. QUESTION: Is a material that is brittle also weak?

19. QUESTION: What can be said to be the opposite of brittleness?20. QUESTION: ________ materials show resistance to plastic deformation

21. QUESTION : Whats the definition of compressive strength?

22. QUESTION : Whats the definition of compressive strain?

23. QUESTION: Are all malleable materials tough? Explain.

24. QUESTION: Give the material properties necessary for a) Aeroplane wingsb) Electrical wiring and c) Building construction

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Materials Top Trumps