Y11 PPE 2 Revision Flashcards
What is a system diagram?
A diagram that breaks down an operation into three main component parts: input, process and output.
What are examples of inputs?
Sensors - eyes and ears
Pressing a button
What does an input do?
Produces an electronic signal which goes to the process.
What does a process do?
Controls the output.
What are examples of outputs?
Light, motion, sound.
Describe the system diagram of a street light sensor.
Input Process Output ——-> ——-> ——->
Light sensor Switching Light
Define ‘analyse’
To overview and see the features of a product.
Define ‘evaluate’
Positives/negatives with a conclusion.
Define ‘aesthetics’
How the product looks.
What are user needs and wants?
Needs are must and wants are desirables.
What are innovative improvements?
Interesting, original improvements.
What is iterative design?
Re-thinking your design, feedback, design again.
What are anthropometrics?
Measurements of human body.
What are ergonomics?
Traits that make the product comfortable to use.
Describe layout paper.
. Lightweight, thin white paper
. Used for initial ideas
. Smooth
. Cheap
. 50gsm
Describe tracing paper.
. Thin, translucent paper
. Makes copies of drawings
. High cost
. Strong
. 40gsm
Describe cartridge paper.
. Good quality white paper
. Available in different weights
. General purpose work (Sketching, painting)
. Medium cost
Describe bleedproof paper.
(Does not absorb ink)
. Smooth, hard paper
. Used with water based and spirit based felt-tip pens.
. Medium cost
Describe grid paper.
. Printed square and isometric grids in different sizes
. A guide for quick sketches and working drawings.
. Low cost
What environmental factors do you consider when selecting materials and components?
Recyclable or re-used materials, product mileage.
What cultural factors do you consider when selecting materials and components?
If the materials/components are sensitive to cultural influences.
What ethical factors do you consider when selecting materials and components?
Purchased from ethical sources such as FSC.
How can wood fibres in paper/card or boards be broken down?
The fibres are either broken down mechanically (by force) or chemically (by adding chemicals).
Why can paper and card only be recycled 5 times?
Because each time the paper and card are recycled the fibres become shorter and weaker.