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WorksheetsMaterials 3ºESO C
Total questions: 20
Worksheet time: 11mins
The types of plastics are:
Thermoplastics, thermosettings, elastomeric plastics and polyplastics.
Polypropylene, PVC, microplastics and bioplastics.
Transparent plastics and opaque plastics.
Elastic plastics and rigid plastics.
When were the first man-made plastic developed?
Around 1850
Early twentieth century
Late twentieth century
Around 1800
Regarding environmental impact of plastics:
Plastics decompose slowly.
Plastic has a short term persistance.
Their acumulation affects marine life, water quality and human health.
Conventional plastics are biodegradable.
According to the definition, nanomaterials must have:
At least 1 dimension in the nanoscale (range 1-100 nm)
At least 1 dimension in the nanoscale (smaller than 1 nm)
At least 2 dimensions in the nanoscale.
The 3 dimensions in the nanoscale.
Principal applications for nanomaterials are:
Medicine, biotechnology and electronic
Quantum applications
Manufacturing of microplastics
Construction
Nanomaterials were seen for first time in the decade of...
(a)
The types of stone materials are:
Igneous, metamorphic and sedimentary
Stone, binders, compounds, ceramics and glasses
Hard and soft
Rocks, sand, clay and silt.
What are the main environmental concerns related to the use of stone materials?
There are no concerns because they are natural
They cause noises and vibrations, CO2 emissions, liquid spills into water and energy consumption.
Environment is not affected as stone materials are biodegradable
Is due to the impossibility of reusing or recycling them
Tell me the two most common applications of stone materials
(a)
First synthetic fiber appears in:
Late 19th
Early 20th
Late 20th
Medieval era
Flexibility is one of the most importante properties of textile materials. It consists of:
The ability to bend without breaking
The ability
to withstand wear,
friction, and
repeated use
How it responds to chemicals
None of the options
Examples of natural textile materials are:
Cotton, wool, silk
Polyester, nylon, spandex
Wool, silk and leather
Cotton, silk and nylon
Cardboard and paper were invented in:
Modern era
Medieval era
Paleolithic
None of the others
About properties of wood materials, point out the FALSE answer:
It is a good insulator
It is biodegradable and recyclable
It has toxicity
Its resistance may vary
Wooden materials...
Are provided from the trunk of a tree
Are provided from the bark of a tree
Could be natural or synthetic
Began to be used in the medieval era
Some of the most common work procedures on metallic materials are:
deformation, cutting, machining and recycling
casting, deformation, cutting and recycling
casting, cutting, machining and recycling
casting, deformation, cutting and machining
Steel:
is a key alloy
is a basic metal
is not a metallic material
it floats on water
Regarding the properties of metallic materials: (point out the wrong answer)
they are excellent electrical and thermal conductors
they are resistant to extreme temperatures
not all metals are efficiently recycled
all of them exhibit magnetic properties
Thermosetting plastic is a type of plastic that:
can´t be remelted or reshaped
have elastical properties
is known for its abrassion resistance
is made of polymer
The two most important properties of stone materials are:
(a)
