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1. The properties of materials describe...
A
the perception we have of them.
B
their behaviour when subjected to external forces.
C
their qualities and characteristics.
2. Mechanical properties relate to...
A
material´s behaviour when subjected to stress and loads.
B
material´s behaviour when subjected to heat.
C
the impact the material have on the environment.
3. Thermal properties relate to...
A
material´s behaviour when subjected to stress and loads.
B
material´s behaviour when subjected to heat.
C
the impact the material have on the environment.
4. Environmental properties relate to...
A
material´s behaviour when subjected to stress and loads.
B
material´s behaviour when subjected to heat.
C
the impact the material have on the environment.
5. Hardness, brittleness, mechanical resistance, elasticity, toughness and plasticity are...
A
thermal properties
B
mechanical properties
C
environmental properties
6. Expansion and thermal conductivity are...
A
thermal properties
B
mechanical properties
C
environmental properties
7. Toxicity, reciclability, environmental hazard and biodegradability are...
A
thermal properties
B
mechanical properties
C
environmental properties
8. To break easily without being deformed hardly is known as...
A
Toughness
B
Hardness
C
Brittleness
9. To return to its original form after being deformed is known as...
A
Toughness
B
Elasticity
C
Brittleness
10. The resistance to be pierced or scratched by another body is known as...
A
Hardness
B
Elasticity
C
Brittleness
11. The resistance to forces applied whitout breaking or changing shape is known as...
A
Hardness
B
Elasticity
C
Mechanical resistance
12. The resistance to be changed, deformed or broken is known as...
A
Hardness
B
Toughness
C
Mechanical resistance
13. To become permanently deformed whitout breaking, once the elastic limit has been exceeded, is known as...
A
Hardness
B
Toughness
C
Plasticity
14. The increase in size when the temperature rise is known as...
A
Expansion
B
Thermal property
C
Thermal conductivity
15. The ability to transmit heat is known as...
A
Expansion
B
Thermal property
C
Thermal conductivity
16. Toxicity means...
A
The level of toxic effect a contaminant has on an ecosystem.
B
How strong a poison or toxin is.
C
the ability of a material to naturally decompose.
17. Biodegradability means...
A
The level of toxic effect a contaminant has on an ecosystem.
B
How strong a poison or toxin is.
C
the ability of a material to naturally decompose.
18. Environmental hazard means...
A
The level of toxic effect a contaminant has on an ecosystem.
B
How strong a poison or toxin is.
C
the ability of a material to naturally decompose.
19. Recyclability means...
A
The possibility of reusing a material for the same purpose it was created or for a different one.
B
How strong a poison or toxin is.
C
the ability of a material to naturally decompose.