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WorksheetsMaterials & Processes - TEST #3 Review
Total questions: 30
Worksheet time: 3600secs
Iron is ...
a chemical element from the periodic table (Fe)
a man made material
only found on earth in the form of an ore
found in its pure form in the earths crust
An ore is ...
the name of steel after it is heat treated
mixture of elements created by the extreme heat and pressure of a meteor
a man made combination of materials with specific properties
a natural mixture of reactive elements found in the earths crust
Pure iron is ...
softer than aluminum
an extremely hard material which makes it difficult to work with
found abundantly in the earths crust
not found in nature as it is highly reactive
Steel is ...
a man made mixture of iron with small amounts of other elements added called an alloy
a natural ore including iron and other elements found in the earths crust
a modern material developed after the industrial revolution
an alloy which can be found in the earths crust
The most common element added to iron to create steel alloy is ...
tungsten
vanadium
chromium
carbon
Steel is an amazingly versatile material because we can make into a variety of alloys. Today there are over
500 types of steel
1500 types of steel
2500 types of steel
5000 types of steel
This type of steel was discovered by accident when an experiment went wrong, and includes over 11% of chromium
stainless steel
high strength steel (HSS)
structural steel
sheet steel (used for thin parts)
Varying the amounts of additives added to iron changes the properties of the steel alloy created. The material properties which can be effected are ...
hardness
ductility
tensile strength
opacity
The properties of steel can also be slightly modified using heat treatments. A heat treatment ...
is heating the iron before it is alloyed
is heating the additives before adding them into the pure iron
is subjecting the alloying chamber to a specific time/temperature setting
changes the crystal structure of the steel thereby effecting its properties
is subjecting the finished alloy to specific time/temperature setting
Annealing is ...
heating the steel alloy to a sufficiently high temperature to soften it, and remove built in stresses
heating the steel alloy to a high temperature and rapidly cooling it, which hardens it but also makes it brittle
moderately heating the finished steel alloy to remove some of the internal stresses and make it softer and less brittle
storing the steel alloy at room temperature for a long period of time to cure it
Quenching is ...
heating the steel alloy to a sufficiently high temperature to soften it, and remove internal stresses
heating the steel alloy to a high temperature and rapidly cooing it, which hardens it but also makes it brittle
moderately heating the finished steel alloy to remove some of the internal stresses and make it softer and less brittle
storing the steel alloy at room temperature for a long period of time to cure it
Tempering is ...
heating the steel alloy to a sufficiently high temperature to soften it, and remove built in stresses
heating the steel alloy to a high temperature and rapidly cooling it, which hardens it but also makes it brittle
moderately heating the finished steel alloy to remove some of the internal stresses and make it softer and less brittle
storing the steel alloy at room temperature for a long period of time in order to cure it
The oldest know steel produced by man is a piece of ironware an is approximately _________ years old
500
1000
3000
4000
10000
Aluminum is best known for this characteristic
Electrical Conductivity
Thermal Conductivity
Low Density
Ductility
This material can be recycled easily (and infinitely) as it does not breakdown during recycling making it very environmentally friendly
Iron
Steel
Aluminum
Composite
This type of wood comes from deciduous trees which typically grow slowly, making it harder, denser, and creating more grain colours and patterns
Softwood
Hardwood
Plywood
Ironwood
The uniform shape of many styles of pasta comes from this manufacturing process
Injection molding
Sand Casting
Extrusion
Hydroforming
Recycling this material is made difficult because there are many types that must be sorted and and separated before recycling
Composites
Plastic
Steel
Aluminum
Wood is dried in a kiln, a process that takes several days to weeks. Which are the two important parameters that must be controlled during the kiln drying process?
Time and Temperature
Humidity and Time
Temperature and Humidity
Pressure and Humidity
This process uses stationary ejector pins to automatically
eject the part
Sand Casting
Extrusion
Metal Forming
Injection Molding
These processes both require a sprue and runner
Extrusion
Metal Forming
Injection Molding
Sand Casting
Hydro-forming
The Great Pacific Gyre (Plastic garbage dump in the Ocean) is a good indicator that only ____ % of all plastic produced used is recycled
3%
5%
15%
25%
One of the major drawbacks of this material is its susceptibility to fatigue failure
Wood
Iron
Steel
Aluminum
Composite
This newer method of metal forming uses a die (to support
the metal) and a high pressure liquid to form it.
Hydro-forming
Injection Molding
Metal Stamping
Extrusion
This ore is the main source of Aluminum and it is very important because it also contains iron! (the two most commonly used metals)
Carbon
Bauxite
Silicone
Polymer
Choose the 3D printable plastic from the list that ...
is the hardest to melt due to its high melting point
ABS - Acrylonitrile butadiene styrene
PLA - Polylactic Acic
ASA - Acrylonitrile styrene acrylate
PET - Polyethylene terephthalate
Choose the 3D printable plastic from the list that ...
is environmentally friendly because its biodegradable
ABS - Acrylonitrile butadiene styrene
PLA - Polylactic Acic
ASA - Acrylonitrile styrene acrylate
PET - Polyethylene terephthalate
Choose the 3D printable plastic from the list that ...
is used due to its resistance to UV light which makes it very durable
ABS - Acrylonitrile butadiene styrene
PLA - Polylactic Acic
ASA - Acrylonitrile styrene acrylate
PET - Polyethylene terephthalate
Which factor must be considered when selecting a specific material for your design?
Strength
Durability
Cost
Weight
All of the above
A major drawback for this class of modern materials
is that they cannot be commercially recycled yet
Aluminum Alloys
Plastics
Composites
Plywood
