Gcse Design Technology Edexcel: Systems Study Guide Rated A+

efficient cutting to minimise waste {Ans: using a template to mark out shapes so they fit as close as possible, rotating if necessary. it can increase initial costs with additional time needed in the design and planning stages.}moisture sensor {Ans: this can be made by trying to pass electricity between probes. the more water something contains, the more electricity is conducted through the probes}what is nickel used for and where is it found(capri) {Ans: a silver metal used for stainless steel, magnets, coins and electroplating. found in phillipines, indonesia, russia, canada and australia}program {Ans: a set of instructions that a computer follows to make the system work}polymers made from crude oil {Ans: acrylic, HIPS, PVC and ABS}effect of modern systems {Ans: information is available quickly over the internet, video links between people around the world, social media changes how people stay in touch, cybercrime is now a big problem}cost factor - quality of components {Ans: if a lower tolerance will suffice, it will be used to save costs}disadvantages of painting {Ans: can fade in sunlight and wear away}push to make {Ans: a button is pressed to bring contacts together and allow