D AND T

Question 1

What is motion?

Answer 1

The action of something being moved.

Question 2

What are the 4 types of motion?

Answer 2

Linear, reciprocating, oscillating, rotary

Question 3

What is a structure?

Answer 3

Something that will support an object or weight.

Question 4

What must a structure support?

Answer 4

It’s own weight and whatever load is put on it.

Question 5

What do you call joining a number of bars together to form a framework?

Answer 5

frame structures

Question 6

What is the formula for mechanical advantage?

Answer 6

mechanical advantage = load (N) / effort (N)

Question 7

Cog wheels are ______ to create gear trains.

Answer 7

meshed

Question 8

A simple gear train has a _____ cog or ‘gear’ which rotates the ‘______ gear’.

Answer 8

drive, driven

Question 9

What is the formula for gear ratio?

Answer 9

number of teeth on drive gear / number of teeth on driven gear

Question 10

gearing up = bigger drive/driven gear than drive/driven gear

Answer 10

drive, driven

Question 11

gearing down = bigger drive/driven gear than drive/driven gear

Answer 11

driven, drive

Question 12

__________ are used to transfer drive from one pulley to another.

Answer 12

drive belts

Question 13

Belts rely on ________ to grip the pulley.

Answer 13

friction

Question 14

Belts are often made from…

Answer 14

rubber

Question 15

A pulley is often _______ to help increase the friction on the belt.

Answer 15

grooved

Question 16

Attaching from a small pulley to a large pulley results in more/less movement at a faster/slower rate.

Answer 16

less, slower

Question 17

Circuits work on a basic principal and require 3 aspects to function correctly:

Answer 17

input - process - output

Question 18

A battery or power cable are examples of inputs/processes/outputs.

Answer 18

inputs

Question 19

A speaker sounding is an example of an input/output/process.

Answer 19

output

Question 20

An electric circuit staying on for a certain period of time is a process/input/output.

Answer 20

process

Question 21

And input is usually an ________________ input.

Answer 21

electric signal

Question 22

A process usually requires a circuit to ___________.

Answer 22

do something

Question 23

An output is usually a ______.

Answer 23

signal

Question 24

What colour are positive wires?

Answer 24

red

Question 25

What colour are negative wires?

Answer 25

black

Question 26

Circuits are polarised and electricity flows ______.

Answer 26

one way

Question 27

What is a design brief?

Answer 27

A document which outlines the core details and expectations of a design project.

Question 28

Why are design briefs important?

Answer 28

They capture key information so that your design has the right outcome.

Question 29

What is 1 disbenefit of a design brief?

Answer 29

They are not tangible.