Simple machine Year 6.pdf

topic: simple machine
Year: 4 and 6

2. •Wheel and axle
•Lever
•Wedge
•Pulley
•Gears
•Inclined plane
•Screw

4. •Machines are tools that help us to do
our work and make our lives easier.
•A simple machine is a device that
allows us to use less force to make
easier and faster.
•Machines can be classified into :
•simple machines
•complex machines

5. A simple machine is a
machine with few or
no moving parts.

6. Simple
Machines
Inclined
plane
Lever
Wheel and axle
Screw
GearPulley
Wedge

7. Wheel and Axle
•A wheel and axle consists of a larger
wheel connected by a smaller cylindrical
rod (axle).
•Examples are door knobs, toy cars, cross
spanners, tap heads and steering wheels.
wheel
axle

9. Lever
•A lever consists of a straight rod or board
that attach on a point known as the
fulcrum.
•Examples are scissors, hammers and
wheelbarrows
Effort
Load
Fulcrum

13. Inclined plane
•An inclined plane is a flat plane that
connects two other surfaces of different
levels.
•The examples are staircases and ramps.

16. Screw
•A screw has a spiral inclined plane called
thread.
•A use of a screw is to hold objects
together.
•The examples are a bolt and nut,
spanners and tap heads.

18. Gear
•A gear is a wheel or cylinder with teeth.
•The examples of gears are clocks, drills,
handheld egg beaters and watches.

20. Pulley
•A pulley is a way to use less effort or
energy to lift an object.
•A pulley consists of a grooved wheel that
can move freely.
•Pulleys are found in flag poles, cranes and
window blinds.

22. Wedge
•A wedge is a simple machine that has an
inclined plane on one or both sides of its
surfaces.
•Wedges are used to cut or split things.
•Examples are knives, nails, axes, door
stoppers and saws.