Technology 2ESO: Machines | Baamboozle - Baamboozle

0%

0 0 0

What is reciprocating motion?

The object moves forwards and backwards in a straight line.

What are chain and sprocket systems?

The systems that consist of two toothed wheels (sprockets) separated by a distance and connected by a chain that meshes with the teeth of the two wheels

What are transmission belts are usually made of?

rubber

Give an example of an everyday object where a chain and sprocket system is used?

bicycle

How do you call a set of elements or parts that work together and use energy to perform a task and obtain a result

machine

How do you call a mechanism consisting of two toothed wheels?

gears

What is a screw and nut mechanism?

A mechanism in which the rotary motion of the nut is converted to forward linear motion in tghe screw

What is a transmission ratio?

The ratio between the size of the wheels or gears and their speed of rotation

How do you call a mechanism consisting of two wheels located one next to the other?

friction wheel

What is a driver element?

the component that feeds energy to a machine

What are the elements of a machine

Driving element, motion converting / transmitting element, driven element

What is a hoist?

a set of moveable and fixed pulleys

Where are the worm gears typically used? Name an object

e.g. for tuning strings on musical instruments

How do you call a mechanism that converts the movement from the driver element into a movement that the driven element can use?

Motion conversion mechanism

What is linear motion?

the object moves in a straight line

How do you call a rigid bar that can pivot on a point of support and lift weight by applying force?

Lever

What is a rick and pinion mechanism?

It consists of a toothed wheel (pinion) that meshes with a toothed bar (rack). The rotary motion of the pinion is converted to linear motion of the rack

What is oscillating motion?

the object moves backwards and forwards tracing a curve

What is a driven element?

the component that receives the force produced in the machine

What is rotary motion?

object moves in circles

How do you call a mechanism that gets energy from the driver element and transfer it to a driven element?

motion transmission mechanism

If you have a transmission system with friction wheel and you want the two wheels to rotate in the same direction, what do you need to do?

To insert a third wheel (idler or idle wheel) between them

In which everyday objects is the rack and pinion mechanism used?

corkscrew

Can you formulate the law of lever?

E x Ae = R x Ar

What is a worm gear?

This rotary transmission mechanism consists of a worm that is fitted to the driver shaft and toothed wheel (worm wheel) that is fitted to to the driven shaft

What is a crank and slider mechanism?

It is the mechanism in which the rotary motion of the crank (driver) is converted to reciprocating linear motion in the connecting rod (driven)

What is a wheel with a grooved rim used to lift heavy weights?

Pulley