Secondary 2 Design & Technology

Measuring a material's properties under controlled conditions.

A material's resistance to scratching and denting.

The greatest pulling force a material survives before breaking.

A material's ability to absorb energy before it fractures.

How easily a material lets electric current pass.

A material that blocks current and heat, such as plastic and rubber.

Material made of woven or knitted fibres, such as cotton cloth.

Scraping samples with a hard object to compare hardness by mark depth.

A material's ability to resist wear from rubbing.

A material's ability to take in and hold water.

Movement along a straight line, such as a sliding door.

Movement turning about an axis, such as fan blades.

Swinging back and forth within an angle, like a pendulum.

To-and-fro movement along a line, like a sewing needle.

The mechanism that carries power from its source to the working part.

A turning bar that carries rotation from end to end.

A wheel on a shaft that works with a belt to transmit rotation.

A loop around pulleys that transmits rotation by friction.

Passing motion and force from one place to another.

The state where a structure's forces are even and its centre of gravity sits well.

Processing equipment fixed to a bench and driven by a motor.

A machine whose narrow blade races up and down to cut curves.

A bench machine that spins a bit and feeds it by handle to drill holes.

The narrow toothed strip on a scroll saw that does the cutting.

The rotating cutting tool on a drill press that bores round holes.

The part that grips the drill bit and spins with the spindle.

The material being worked on.

A clamp fitted to the machine table that grips the workpiece.

Routine care that keeps equipment sound, such as changing tools and cleaning.

Handling unusable equipment by procedure, recycling materials where possible.

The organised route from identifying a problem to evaluation and improvement.

Splitting a complex problem into factors to study one by one.

Solving from unexpected angles, outside the usual frame.

A diagram radiating associations from a central idea.

Group idea generation in a short time, criticism held back.

A quick hand-drawn picture that records ideas without instruments.

A drawing with near lines large and far lines small, like the eye's view.

A pictorial on thirty-degree axes showing three measurable faces.

A reduced or simplified sample built to test functions and properties.

A movement of design thought that shapes style, such as Bauhaus or Art Deco.

A system that manages its output automatically against instructions or a target.

A system that acts on orders only, its output never affecting control.

A system that measures its output and self-corrects through feedback.

Returning output information to the input to compare with the set value.

A component that measures quantities like temperature, humidity or light.

The target state the user sets, such as a desired temperature.

The part that compares the measured value with the setting to find deviation.

A device that senses temperature and holds the set level.

A system diagram of blocks for processes and arrows for signal flow.

Adjusting the output to bring the system back to its target.

Parts that carry current and act, such as batteries, switches and motors.

Parts that sense, judge and process signals, such as resistors and relays.

The complete path that current flows around.

Components chained in one path, with a single route for current.

A component that glows when current flows forward, often a status indicator.

A sensor whose resistance changes with light level.

A sensor whose resistance changes with temperature.

An electromagnetic switch in which a small current controls a large one.

Technology that uses compressed air as its power.

An actuator where compressed air drives a piston to push in a line.