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WorksheetsMaterials and Materials Processes
Total questions: 70
Worksheet time: 6hrs 50mins
Choose the material you can stretch.
Which of these is not a material?
glass
pencils
wood
plastic
If a material is flexible it...
can bend easily.
can melt easily.
can burn easily.
can transport electricity easily.
Which of these materials is a good conductor of heat?
Wood
Ceramic
Metal
Choose the correct option:
Glass isn't transparent and rigid.
Glass is bendy and soft.
Paper is transparent.
Glass is transparent and rigid.
Shiny and conducts electricity
Meetal
Polythene
Rubber
Metal
If a material is a good conductor it...
doesn't let water go through it.
lets water go through it.
doesn't transport heat and electricity through it.
transports heat and electricity through it.
A material that does not allow heat to travel is
An electrical conductor
An electrical insulator
A thermal conductor
A thermal insulator
Hard and attracted to a magnet
Wool
Wood
Metal
Cotton
What should we try to do with materials when we are finished with them?
Eat them
Recycle them
Throw them away
Burn them
Dull and an electrical insulator
Iron
Glass
Wood
Paper
Weak and absorbent
Fabric /faabrick
Paper /tissue paper
Polythene/plastic
None of theme
determines how well the material will resist deformation and return to its normal size or shape after a force has been applied to it
texture
elasticity
strength
uniformity
determines how easy it is to roll or hammer out the material without breaking it apart
bounce
malleability
strength
uniformity
a solid heterogeneous mixture of two or more substances that makes use of the properties of each component
composite
malleability
strength
uniformity
Which of the following is not a composite material
MDF
Carbon fibre
Arimid fibre
Structural concrete
Glass
An important property of polymer reinforced composite materials is?
Hardness
Compression strength
Strength to weight ratio
Conductivity
In structural concrete the concrete has which of the following properties?
Shear strength
Tensile strength
Torsion strength
Compression strength
A composite material is made up of
A single material
Two or more separated materials
Two or more chemically combined materials
None of these
Which of the following composite material is paired correctly with its uses?
A
B
C
D
Why are composite materials so widely used?
They all wash better than non- composite materials.
They are all much stronger than non- composite materials.
They combine the properties of all the materials they are made from.
They are all waterproof.
Materials are classified as
Natural, plastic, and leather
Natural, synthetic, and mixed
Metal, synthetic, and leather
Metal, plastic, and leather
Which of the answers below lists actual material properties?
Mechanical, radiant, and nuclear
Thermal, radiant, and electrical
Thermal, radiant, and nuclear
Mechanical, thermal, and electrical
What is tensile strength?
Measures the material’s resistance to being squeezed.
Measures the material’s resistance to various types of rapidly changing stresses.
Measures the material’s resistance to being pulled apart.
The material’s resistance to permanent indentation.
Compression strength is the measure of what force?
Measures the material’s resistance to being squeezed
Measures the material’s resistance to various types of rapidly changing stresses
The material’s ability to return to its near original shape after a stress has been applied and removed
The material’s resistance to permanent indentation
A product that is one of a kind and manufactured by a specialist is what type of manufacturing?
Custom
Batch
Just in time (JIT)
Continuous
Products made with no interruption in the production line is an example of what type of manufacturing?
Batch
Custom
Continuous
Just it time (JIT)
What is the definition of composite materials?
Inorganic and nonmetallic materials formed from powdered materials through the application of heat.
Elements, compounds, or alloys that account for roughly two-thirds of all materials.
Elements commonly referred to as plastics or rubber
Any combination(s) of two or more distinct materials, in which those materials maintain their original properties.
Features of a blow moulded product...
complicated shape
hollow container
same cross-section
tray with gently sloping sides
Features of a injection moulded product...
complicated shape
hollow container
same cross-section
tray with gently sloping sides
Features of an extruded product...
complicated shape
hollow container
same cross-section
tray with gently sloping sides
Thermoset laminates;
Are used on kitchen worktops
Are used on kitchen cupboards
Create a scratch resistant surface
Are prone to chipping on the edge
Which of the following would be the most appropriate manufacturing process to cut threads and other details into a part?
Milling
3-D Printing
Injection Molding
Casting
Which of the following would be the most appropriate manufacturing process to create a small number of prototype designs?
Milling
3-D Printing
Injection Molding
Casting
Which of these processes is characterized by cutting away sections of a block of material to create a part?
Milling
3-D Printing
Injection Molding
Casting
Which of these processes is characterized by adding layer by layer of material to create a part?
Milling
3-D Printing
Injection Molding
Casting
You need to 3-D print 200 parts. The printer can print 12 parts in 3 hours. How long will it take to make the parts?
50 hours
4 hours
16.6 hours
66.6 hours
What is an example of a polymer material type?
Steel roller coasters
Wooden roller coasters
Rubber tires on a car or truck
Table saw blade
The automation of machine tools by means of computers executing pre-programmed sequences of machine control commands among multi-axis coordinate planes.
Computer Numerical Control (CNC)
Computer Alphabetical Control (CAC)
Computer Cryptographic Control (CCC)
Which manufacturing process does this diagram depict?
Blow molding
Injection molding
Computer Numerical Control process (CNC machine)
Vaccuum molding
Manufacturing program that combines automation with manual tasks.
Vector
MIG Welding
TIG Welding
Computer-Integrated Manufacturing (CIM)
The process where a sheet of plastic is heated to the temperature where it becomes flexible and ductile. The plastic is then stretched over a mould by a vacuum acting from below, pulling it down and creating a near-perfect fit onto the mould is called.........
Injection Molding
Vacuum Molding
Milling
Blow molding
Check all of the advantages of Die Cast parts. (You have to get all of the advantages checked to get the answer correct).
The process is cheap
It makes smooth parts
Creates strong parts
It's a quick process
Parts made by the process of die casting are typically.....
large parts
small parts
only used for prototypes
very weak
3D printing is an additive manufacturing. This means
material is taken away to create an object
material is added to create an object
Which manufacturing process does this diagram depict?
Blow molding
Injection molding
Computer Numerical Control process (CNC machine)
Vaccuum molding
Plastic action figures are an example of products typically made by which of these processes?
Milling
Die Casting
Vacuum Molding
Sheet Metal Forming
The process of machining using rotary cutters to remove material by taking small cuts out of the material is called...
Milling
Forming
sheathing
die casting
A metalworking operation in which flat sheets are bent, rolled or spun to the shape of the finished part is called ____.
sheet metal blanking
sheet metal forming
sheet metal turning
milling
The process where a sheet of plastic is heated to the temperature where it becomes flexible and ductile. The plastic is then stretched over a mould by a vacuum acting from below, pulling it down and creating a near-perfect fit onto the mould is called.........
Injection Molding
Vacuum Molding
Milling
Blow molding
A metal casting process that is characterized by forcing molten metal under high pressure into a mold cavity is called.........
Blow Molding
Forming
Milling
Die Casting
Parts made by the process of die casting are typically.....
large parts
small parts
only used for prototypes
very weak
Check all of the advantages of Vacuum Molded parts. (You have to get all of the advantages checked to get the answer correct).
The process is cheap
It's only used for prototypes
Extremely high start-up costs
Can create large quantities in a short amount of time.
The manufacturing process that creates flexible plastic components which are typically in the shape of a single or multi-lumen tube is.....
blow molding
polymer casting
extrusion molding
Injection molded
Which manufacturing process does this diagram depict?
polymer casting
die casting
extrusion molding
blow molding
Additive mfg uses much less material than other subtractive mfg processes.
True
False
There are 3 types of machines used in a CNC machine. Which one of these are NOT one of them
Drill
Lathe
Mill
punch
Which sheet metal forming process does this diagram depict?
Roll forming
Turning
Bending
Spinning
Which manufacturing process does this diagram depict?
blow molding
milling
Computer Numerical Control process (CNC machine)
casting
Silicon posseses both metal and nonmetal properties and is a
Non-chemical combination of any two or more substances that can be physically separated and do not have a definite ratio
atom
compound
molecule
mixture
