Year 10 Assessment Revision

Question 1

define a composite material.

Answer 1

a material made from two or more materials with different properties

Question 2

how do you calculate RPM if the driver gear is larger?

Answer 2

multiply driver revs by multiplier

Question 3

How do you calculate RPM if the driver gear is smaller?

Answer 3

divide driver gear revs by multiplier

Question 4

what does sustainable mean?

Answer 4

not causing permanent damage to the environment and not using up fossil fuels

Question 5

Name a sustainable textile example

Answer 5

paper
cotton
softwood from ethical sources

Question 6

name the 4 linkages

Answer 6

reverse motion linkage
parallel motion linkage
crank and slider linkage
bell crank linkage

Question 7

explain reverse motion linkage

Answer 7

the direction of movement in one rod is reversed in the other

Question 8

explain parallel motion linkage

Answer 8

rods are parallel to each other. Top rod moves left. bottom rod moves right.

Question 9

explain crank and slider linkage

Answer 9

the rods move forwards and backwards in slider

Question 10

explain bell crank linkage

Answer 10

it allows horizontal movement to be converted to vertical movement and vice versa

Question 11

what is a hardwood?

Answer 11

usually deciduous, tight grain, dense and expensive wood

Question 12

what is a softwood?

Answer 12

fast growing, evergreen & cheap wood

Question 13

hardwood examples

Answer 13

oak
beech
balsa
ash

Question 14

softwood examples

Answer 14

pine
larch
spruce

Question 15

what is crowd funding?

Answer 15

it involves using websites to promote an idea. Backers choose to invest to help fund the idea. Backers get some advantages like:
free gifts
discounts
percentage share of the company

Question 16

what is fair trade?

Answer 16

it makes sure producers get a fair price.
fair trade producers have to meet certain standards that benefit:
workers
the environment
producers

Question 17

Define material toughness

Answer 17

the ability of a material to absorb energy and not rupture/ fracture

Question 18

define rotary motion

Answer 18

follows a circular path around a fixed point

example = bicycle wheel

Question 19

define linear motion

Answer 19

in a straight line in one direction

example = train

Question 20

define oscillating motion

Answer 20

occurs when an object swings from one side to the other from a fixed point
example = pendulum clock

Question 21

define reciprocating motion

Answer 21

a repetitive motion from one side to the other

example = piston (in an engine)

Question 22

what is a microcontroller?

Answer 22

an integrated circuit. It can be programmed to perform different processing functions

Question 23

what are some advantages of a microcontroller?

Answer 23

size of circuit is reduced
can be reprogrammed many times
add to flexibility by having pins for connecting several input and output devices

Question 24

what are some disadvantages of a microcontroller?

Answer 24

often cost more
programming software and hardware required
language of system must be learned

Question 25

what is planned obsolescence?

Answer 25

when a product is designed to become useless quickly | example = disposable razor or phones

Question 26

what do the 6 Rs do?

Answer 26

they reduce the impact of a new product on the environment

Question 27

Name the 6 Rs

Answer 27

``` Repair Reuse Recycle Rethink Reduce Refuse ```

Question 28

define Reuse

Answer 28

passing on a product e.g. tyre for a swing

Question 29

define Rethink

Answer 29

thinking about the design from an environmental perspective

Question 30

what are surface treatments?

Answer 30

they change the properties of materials

Question 31

name 4 surface treatments

Answer 31

dip coating powder coating tanalising flame retardance

Question 32

what does dip coating do?

Answer 32

creates a soft, smooth finish | used for wire racks and tool handles

Question 33

what does powder coating do?

Answer 33

creates an even coat and almost no waste

Question 34

what does tanalising do?

Answer 34

prevents insect attacks and wood decay | used for outdoor wood like fences

Question 35

what does flame retardance do?

Answer 35

makes a fabric less likely to catch fire | used for workwear

Question 36

name three benefits of printing

Answer 36

- can be done in small or large quantities - can easily repeat designs - actual printing process is quick

Question 37

name three benefits of injection moulding

Answer 37

- fast production at a high consistency - hardly any labour costs - little post production scrap

Question 38

name three benefits of die cutting

Answer 38

- manufacturing techniques are the same for all materials - parts can be removed from material with ease - fast and continuous production

Question 39

name three materials and their modifications

Answer 39

wood - seasoned metals - annealising polymers - addition of UV stabilisers

Question 40

what’s the purpose of seasoning wood?

Answer 40

reduces moisture therefore makes it stronger

Question 41

why are metals annealised?

Answer 41

heating then slowly cooling a metal makes it more malleable

Question 42

Why are UV stabilisers added to polymers?

Answer 42

to prevent discolouration of polymers left outside

Question 43

name benefits of templates to do with quality, accuracy and speed

Answer 43

- Identical shapes - Products are consistent - accurate components - can check components against templates - quicker - easier

Question 44

name benefits of jigs to do with quality, accuracy and speed

Answer 44

- guides tools - components are consistent - specifically made for a particular job - minimal measuring - reduces effort - saves time