Engineering
This two-part machine made human transport possible
What are a wheel and an axel used for?
The mirror reflects the photons along the inside of a crystal.
Rewrite using the passive.
The photons are reflected along the inside of a crystal by a mirror.
changeable
What am I? You fill me with water then switch me on and wait for me to boil.
A kettle.
Solar translucency
Sunlight can pass through it.
An alloy of iron and carbon which was the precursor to many engineering projects
What is steel?
A rotating screw propels the plastic along the cylinder.
Rewrite using the passive.
The plastic is propelled along the cylinder by a rotating screw.
sealed
enclosed
Describe the basic components of a laser machine.
See page 9 in course book.
photons, atoms, tube, partial mirror, power source, crystal.
Cost-effective: define.
Something that is economical, good value, makes good use of money invested.
This piece of playground equipment consists of a long, narrow board with a pivot point in the middle - as one side goes up, the other side goes down. It is an example of a simple machine.
What is a see-saw an example of?
Joystick controllers originally (create) to allow engineers on Earth to control the Apollo Lunar Rover remotely.
Rewrite using the passive.
Joystick controllers were originally created to allow engineers on Earth to control the Apollo Lunar Rover remotely.
step-by-step
incremental
Explain the difference between height, weight and length.
Height: how tall
Weight: how heavy
Length: how long
thermal protection (material)
A material which protects something from heat.
The force preventing objects continuing to move forever when pushed.
what is friction?
Robo-climber - mobile robot - deployed- prevent -landslides from occurring in mountain regions.
Write full sentence.
Robo-climber is a mobile robot which is deployed to prevent landslides from occurring in mountain regions.
Write full sentence.
horizontally sidesways
laterally
Explain what a counter-weight does.
A counterweight is a weight that, by applying an opposite force, provides balance and stability of a mechanical system.
This material is used to construct and cover roads; it is cost-effective and durable.
Bitumen.
a rotating machine part having cut projections called teeth which mesh with another toothed part to transmit power or force.
what is a gear?
clean-air system - originally- invent - clean - air breathed by astronauts in spacecraft, - now - commonly - find - in portable sterile rooms in hospitals.
Write full sentence.
A clean-air system, which was originally invented for cleaning air breathed by astronauts in spacecraft, is now commonly found in portable sterile rooms in hospitals.
neighbouring
adjacent
Explain three differences between laser light and ordinary light.
See page 8 in course book.
Laser light: one specific wavelength, coherent or organized (photons move in the same direction), very directional and therefore a strong beam.
Ordinary light: many different wavelengths, disorganized, releases light in all directions so the light is weak.
Fail to notice or spot (an error for example)
to overlook