20 mark section Flashcards
what are smart materials
materials which have 1 or more properties and can be changed by external forces, and often reversible when environment changes again
what can influence a change in smart materials
- stress
- temperature
- moisture
- pH
what are technical textiles
fabrics which are developed with a primary reason of focus and use rather than aesthetic
what are the main uses of technical textiles
- medical technical textiles
- agriculture + horticulture
- waterproofing + breathability
- protective functions
- communication
- architectural
- high performance
examples of technical/ modern textiles
- kevlar
- reflective textiles
- wicking fibres
- microfibres
- fabrics which protect against bacteria
- microencapsulated fibres
- fabrics with electronics
- geo textiles
- materials using nano technology
- medial fabrics
what is kevlar
kevlar fibres are woven to create strong net like fabric which are resistant to knife attacks and can resist bullets. it can be treated to make them more flexible/ comfortable
4 types of movement
- linear
- reciprocating
- rotary
- oscillating
linear motion
movement in a straight line
reciprocating motion
back and forth in a straight line
rotary motion
around in a circle
oscillating motion
swinging side to side (like a pendulum)
what is crowd funding
using the internet to get people to contribute money towards a project
virtual marketing
using social networks and websites to advertise/ bring awareness to a brand or product. increases messages visibility and effect
retail marketing
when shoppers can look at a product before buying it online usually for a lower price (showrooming..)
how are retailers looking to advance retail marketing
using new technologies to develop virtual reality showrooms
what are co-operatives
a business owned an managed by its workers.
what do workers in a co-operative do
- work in the business
- govern it
- manage it
- set productions schedules
- determine working conditions
what do tech co-operatives do
provide technical support and consulting to other companies with communications and computer technology goods/ services
what are non- renewable energy sources
energy sources which will eventually run out. (eg fossil fuels)
how are fossil fuels formed
from the remains of dead organisms over a long period of time
examples of fossil fuels
- coal
- oil and gas
coal
formed over 300 million years ago from dead and decayed plants covered in sediment which is compressed and heated.
oil and gas
- remains of animals and plants that lived millions of years ago under the sea and got covered in sand/ slit.
- heat and pressure from earths core turned them into oil and gas
- oil and gas trapped between layers of impermeable rock
advantages of fossil fuels
- reliable
- enough to meet current demand
- generate large amounts of energy cheaply
- more reserves can be accessed as technology is developing
- finding locations is easy
- oil and gas can be transported long distances through pipelines
- methods to extract fossil fuels already exist
disadvantages of fossil fuels
- eventually run out, estimated 100 years
- release co2 when burnt
- pollution, greenhouse effect, global warming
- mining is dangerous, ruins landscape
- oils spills cause large environmental damage
- oil mainly produced outside UK so expensive
