Thursday 18 December 2014

Machines with e.g.


wedge

moving inclined plane that has one or two sides

screw

inclined plane that is wrapped around a cylinder or tube

lever

plank or board balancing on a rigid rock or a fixed point called a fulcrum

gear

a set of grooved wheels that work together to alter the relation between the speed of the driving mechanism

wheel and axis

two circular objects that have a different diameters that are attached, working together

pulley

a grooved wheel with a rope or cable wrapped around the groove

Playing with Simple Machines

There are SIX simple machines: 
Type
Example
Activity
1.   Pulley - How Stuff Works
A pulley is a simple machine that uses grooved wheels and a rope to raise, lower or move a load.
old wooden pulley

2.   Lever - Enchanted Learning animations
A lever is a stiff bar that rests on a support called a fulcrum which lifts or moves loads. 

hammer
3.   Wedge - pictures using LEGO bricks
A wedge is an object with at least one slanting side ending in a sharp edge, which cuts material apart.
iron wedge
4.   Wheel & Axle - Activity using pencils and thread spools
A wheel with a rod, called an axle, through its center lifts or moves loads.
bicycle
5.   Inclined Plane - pictures using LEGO bricks
An inclined plane is a slanting surface connecting a lower level to a higher level.
loading ramps
6.   Screw - Activity using pencil and paper in a new way
A screw is an inclined plane wrapped around a pole which holds things together or lifts materials.
machine screws