1.2 1.3 Flashcards
what is a non renweable engery source
A non-renewable resource is a natural resource that cannot be readily replaced by natural means at a pace quick enough to keep up with consumption.
what os renewable energy source
Renewable energy is energy from renewable resources that are naturally replenished on a human timescale.
is nuclear power renewable or not and why
nuclear is non renewable because it uses uranium from the ground which is a finite material mined from the ground
what are the 9 main types of energy production
coal , oil, gas , nuclear , wind , solar , tidal, hydro electric and biomas
how do fossil fuels convert enegry into electricity
they burn fuel, to heat water and make steam, the steam then turns turbined to turn generators and make electirity
how does nuclear power work
uranium atoms are split to produce heat
what is biomass
growing plants so they can be burned to produce heat
what are the 2 main types of batteries
singal use and primary
what are modern materials
new materials devoloped to have properties that are useful when making new products
what is graphene
a very light yet strong material its also very flexiable
how can metal foam be made and what is it
metal foam is very light weight and has high compressive strength it is made by injecting gas into the metal
what is titanium like
high crossive resistance
what is a smart material
materials with properties that be changes in a controlled fashion
what are shape memory alloyes
went bent they return to origornal shape
what are photochromic pigmenst
they change colour if the light level changes
what are composites
materials that are made from 2 or more different materials
where is teflon uses
non stick pans
how do corn startch polymers biodegrade
very quick if given the right conditions
what is hydroelctricity
a process which used a dam to block water and then channel it throught turbines to produce electricitu
what are thermochromic materials
materials that change colour at specific temperstures
what are shape memory alloys (SMAs)
materiala that when bent can return to their original shape if heated
what are photochromic materials
materials that change colour if the level of light changes
what are technical textiles
materials that are made for their performance and not eathetic characteristics
what is microencapsulation
when very thin fibres hold chemicals in tiny capsules
