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Level 4

Unit 4 Procedures


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pressure
the force that a liquid or gas produces when it presses against an area
smash
to cause something to break into small pieces (using large force)
operation
the fact of being active or working
super-conductor
a substance which has no resistance at a very low temperature
direction
the position towards which someone faces
spark
a small piece of fire that flies out from something burning or a flash of light made by electricity
melt down
to change a state of an object from solid to liquid
electric arc
an electrical breakdown of a gas that produces an ongoing electrical discharge
mounting
a backing or support for something
outflow
a movement away from a place (for liquid or gas)
inbuilt
existing as an original part of something or someone
upthrust
the upward force that a liquid or gas exerts on an object floating in it
downthrust
downward movement of an object under impact or steady pressure
circuit board
a set of electrical connections fixed onto a surface
joint
a place where two or more things are connected together
copper track
a path, on circuit board, which conducts electricity
particle
an extremely small piece of matter
collider
a device which forces particles to hit each other, so scientists can examine them
The Large Hadron Collider
the world's largest and most powerful particle collider
cool down
to lower temperature of something
resistance
the degree to which a substance or device opposes the passage of an electric current
ultra-violet
an electromagnetic radiation which makes skin darker
infrared
an electromagnetic radiation which is used in remote controllers
clockwise
direction in which the hands of a clock move
dimensions
measurement in length, width, and thickness
vacuum
a space where is little or no matter
bring down
to reduce the level of something
keep down
to prevent something from an increase
let in
to allow something to enter
let out
to allow something to escape
put off
to delay an event or activity
slow down
to make something move slower
speed up
to make something move faster
take up
to make something more and more worn out
overhaul
to examine a machine or a system carefully and improve it or repair it
overcome
to deal with and control a problem or feeling
coating
a thin layer that covers the surface of something
roll out
to make a new product, service, or system available for the first time
touchdown
the moment at which an aircraft's wheels make contact with the ground during landing
takeover
an action of assuming control of something, especially the buying out of one company by another
wiring
a system of wires providing electric circuits for a device or building
put garbage in put garbage out
something you say that means that something produced from materials of low quality will also be of low quality
shaft
a long, narrow, typically vertical hole that gives access to a mine
dip in
to put something in water or other liquid
restraint system
the system to control or moderate one's impulses
blow up
burst or shatter violently and noisily as a result of rapid combustion, excessive internal pressure, or other process
contractor
a person or company that supplies goods or does work for other people
foreman
a worker who supervises and directs other workers
flash back
to travel quickly back
lid
the top part of a container that can be removed in order to put something in or take something out
grind
to sharpen, smooth, or produce something by crushing or by friction
risk assessment
a systematic process of evaluating the potential risks that may be involved in a projected activity
regain
to get something back again
skid
slide, typically sideways or obliquely, on slippery ground or as a result of stopping or turning too quickly
obediently
doing, or willing to do, what you have been told to do by someone in authority
sat-nav
navigation dependent on information received from satellites
wedge
to force into a narrow space
urge
to try to persuade someone to do something
rough
if the sea or weather is _____, there is a lot of strong wind and sometimes rain
tiller
a long handle attached to and used to turn a rudder
preset
a control on electronic equipment or on software that is set or adjusted beforehand to facilitate use
cable
a set of wires which carries electricity
rosin
a substance which makes soldering easier by cleaning surface
outwards
away from the center or a particular point
air circulation
the natural or mechanically induced movement of air
resistor
a device which implements electrical resistance as a circuit element
tin
to thinly cover sheets of steel or iron with tin
gear
a rotating machine part having cut teeth, or cogs
clutch pedal
a mechanical device which engages and disengages power transmission
transistor
a semiconductor device used to amplify or switch electronic signals and electrical power
simultaneous
happening at the same time
parallel
extending in the same direction
flush to
evenly aligned with
welding torch
a device that uses fuel gases and oxygen to weld and cut metals
acetylene
a colorless gas, having an etherlike odor, produced usually by the action of water on calcium carbide or by pyrolysis of natural gas
regulator
a device for maintaining a constant gas pressure
filler rod
a metal added in the making of a joint through welding, brazing, or soldering
oxygen
a colorless, odorless, gaseous element constituting about one-fifth of the volume of the atmosphere
weld seam
a metal trace left after welding
electrode
an electrical conductor used to make contact with a nonmetallic part of a circuit
grounding wire
a part of the current that leads the electricity to the ground
flux
an amount that describes the quantity which passes through a surface or substance
arc welding
a process that is used to join metal to metal by using electricity to create enough heat to melt it
torch welding
a process that is used to join metal to metal by creating a high temperature using fuel gases and oxygen
blowdown drum
a container for water intentionally wasted from a boiler to avoid concentration of impurities during continuing evaporation of steam
level indicator
a device used to measure level of liquid and other fluids
splitter tower
a structure that splits the energy beam
vapour
a substance diffused or suspended in the air, especially one normally liquid or solid
pertoleum
a liquid mixture of hydrocarbons that is present in certain rock strata and can be extracted and refined to produce fuels
build-up
a gradual accumulation or increase, typically of something negative and typically leading to a problem or crisis
outburst
a violent and destructive shattering or blowing apart of something, as is caused by a bomb
outlet
a pipe or hole through which water or gas may escape
bring about
to cause something
build up
to create something
carry out
to do a particular piece of work
fill up
to make something full
go off
to explode or to be fired
go up
to increase
heat up
to make something hot
overflow
to flow over the top of a container because it is too full
rule out
to stop considering something as a possibility
set off
to cause something to operate, especially by accident