Gr.11 Topics 1- 4 Final Summative 2022

Last updated almost 4 years ago

29 questions

1

3

1

2

1

3

1

3

1

2

1

______________materials give off a small electrical discharge when deformed.

Photochromicity

Magneto-rheostatic

Piezoelectric

Shape memory

This material deforms plastically and does not return to its original length or shape. This effect is known as____________.

plasticity

stress

none of these makes sense

strain

The resistance a material offers to penetration or scratching is known as____________________

density

hardness

toughness

scratch proof

The resistance of an elastic body to deflection by an applied force is known as______________________

toughness

stiffness

hardness

density

List and explain 3 characteristics of man-made timber.

Warping is the distortion in wood caused by uneven drying, which results in the material bending or twisting.

True

False

Which material property would be needed in the tyre-pressure sensors of a car?

Shape memory alloy

Electro-rheostatic

Magneto-rheostatic

Piezoelectric 

Corporate houses use glass facades in their architecture. Which type of glass is best for this use?

Soda-lime glass

Laminated glass

Tempered or toughended glass

Pyrex or Borosilicate glass

This commercial glass and is the most commonly used. Has medium to low thermal shock, in other words, it will shatter going from cold to hot or the other way.

What are 3 Characteristics of glass? Be specific and use the topic terms.

Creep is usually carried out after hardening of metal to: increase its toughness and ductility, decrease hardness and brittleness.

True

False

Ferrous is an alloy that exhibits excellent mechanical strength, resistance to thermal creep deformation, good surface stability and resistance to corrosion.

True

False

Creep is the tendency of a metal (or material) to slowly move or deform permanently due to the long term exposure of stress that are below the yield strength or ultimate strength of the metal.

True

False

Provide some properties of super alloys and give an example of it use.

A common wood to make a pencil is cedar. Which type of wood is cedar?

Plywood

Softwood

Hardwood

Composite wood

The grain size in a metal can affect the properties. Which of the following statements are true? 1. The larger the grain, the more brittle the metal 2. The smaller the grain, the more brittle the metal 3. The larger the grain, the more ductile the metal

Which of the following best describes the term brittle?

Can be drawn or extruded into an extended shape

Returns to its original shape after being deformed

Breaks into numerous sharp shards

Slow and permanent deformation under the influence of mechanical stress

Which of the following is a heat-treating process?

Warping

Felting

Tempering

Seasoning

Metals and metallic alloys are easily recyclable. Which of the following is an example of an alloy?

Human factor data related to physical characteristics used to optimise the user’s safety, health, comfort and performance is known as Psychological factors.

True

False

Anthropometrics: The aspect of ergonomics that deals with body measurements, particularly those of size, strength and physical capacity.

True

False

Typically descriptive data used to find out in-depth the way people think or feel – their perception. Useful for research at the individual or small (focus) group level is known as Quantitative data.

True

False

Data that can be measured and recorded using numbers. Examples include height, shoe size, and fingernail length. This is known as Quantitative Data

True

False

Technology that is used to reduce pollutants and waste at the end of a process are referred to as :

converging technologies

product recovery strategies

recovery of raw materials

end-of-pipe technologies

Products which are improved and developed over time leading to new versions and generations are known as:

Incremental Solutions

System level solutions

Clean Technology

Product cycle

An additive manufacturing technique that uses a laser to fuse small particles of material into a mass that has a desired 3D shape.

Perspective drawings

Surface modelling

Selective laser sintering (SLS)

Prototypes that are equipped with the ability to take measurements to provide accurate quantitative feedback for analysis.

Surface modelling

Instrumented models

Stereo-lithography

Virtual prototyping

A system that virtually slices a 3D CAD model into thin layers, then cuts out each layer from a roll of material using a laser or plotter cutter. The layers can then be glued in the correct order to create a 3D model.

Working drawings

Finite element analysis (FEA)

Selective laser sintering (SLS)

Laminated object manufacturing (LOM)

These models are clear representations of the final part. They provide a complete set of data for the product to be realized. ----->Surface

True

False

______________materials give off a small electrical discharge when deformed.

Photochromicity

Magneto-rheostatic

Piezoelectric

Shape memory

This material deforms plastically and does not return to its original length or shape. This effect is known as____________. 

plasticity

stress

none of these makes sense

strain

The resistance a material offers to penetration or scratching is known as____________________

density

hardness

toughness

scratch proof

The resistance of an elastic body to deflection by an applied force is known as______________________

toughness

stiffness

hardness

density

Warping is the distortion in wood caused by uneven drying, which results in the material bending or twisting.

True

False

Which material property would be needed in the tyre-pressure sensors of a car? 

Shape memory alloy

Electro-rheostatic

Magneto-rheostatic

Piezoelectric 

Corporate houses use glass facades in their architecture. Which type of glass is best for this use? 

Soda-lime glass

Laminated glass

Tempered or toughended glass

Pyrex or Borosilicate glass

This commercial glass and is the most commonly used. Has medium to low thermal shock, in other words, it will shatter going from cold to hot or the other way.

Borosilicate (Pyrex)

Laminated

Toughened

Glass Fibre

Soda Glass

Creep is usually carried out after hardening of metal to: increase its toughness and ductility, decrease hardness and brittleness. 

True

False

Ferrous is an alloy that exhibits excellent mechanical strength, resistance to thermal creep deformation, good surface stability and resistance to corrosion.

True

False

Creep is the tendency of a metal (or material) to slowly move or deform permanently due to the long term exposure of stress that are below the yield strength or ultimate strength of the metal.

True

False

A common wood to make a pencil is cedar. Which type of wood is cedar?

Plywood

Softwood

Hardwood

Composite wood

The grain size in a metal can affect the properties. Which of the following statements are true? 


The larger the grain, the more brittle the metal
The smaller the grain, the more brittle the metal
The larger the grain, the more ductile the metal

1 & 2

1 & 3

2 & 3

1, 2 & 3

None

Which of the following best describes the term brittle?

Can be drawn or extruded into an extended shape

Returns to its original shape after being deformed

Breaks into numerous sharp shards

Slow and permanent deformation under the influence of mechanical stress

Which of the following is a heat-treating process?

Warping

Felting

Tempering

Seasoning

Metals and metallic alloys are easily recyclable. Which of the following is an example of an alloy?

Iron

None

Concrete

Mild steel

Carbon fibre

Human factor data related to physical characteristics used to optimise the user’s safety, health, comfort and performance is known as Psychological factors.

True

False

Anthropometrics: The aspect of ergonomics that deals with body measurements, particularly those of size, strength and physical capacity.

True

False

Typically descriptive data used to find out in-depth the way people think or feel – their perception. Useful for research at the individual or small (focus) group level is known as Quantitative data.

True

False

Data that can be measured and recorded using numbers. Examples include height, shoe size, and fingernail length. This is known as Quantitative Data

True

False

Technology that is used to reduce pollutants and waste at the end of a process are referred to as :

converging technologies

product recovery strategies

recovery of raw materials

end-of-pipe technologies

Products which are improved and developed over time leading to new versions and generations are known as:

Incremental Solutions

System level solutions

Clean Technology

Product cycle

An additive manufacturing technique that uses a laser to fuse small particles of material into a mass that has a desired 3D shape.

Perspective drawings

Surface modelling

Selective laser sintering (SLS)

Prototypes that are equipped with the ability to take measurements to provide accurate quantitative feedback for analysis.

Surface modelling

Instrumented models

Stereo-lithography

Virtual prototyping

A system that virtually slices a 3D CAD model into thin layers, then cuts out each layer from a roll of material using a laser or plotter cutter. The layers can then be glued in the correct order to create a 3D model.

Working drawings

Finite element analysis (FEA)

Selective laser sintering (SLS)

Laminated object manufacturing (LOM)

These models are clear representations of the final part. They provide a complete set of data for the product to be realized. ----->Surface

True

False