Simple Machines
Name one simple machine
Lever / Wedge / Wheel & Axel / Pulley / Inclined Plane / Screw
What is a complex machine?
A machine made of two or more simple machines
What is a force?
Push or pull
What is a mechanism?
System that changes motion
What is a pulley?
Rope + Wheel (grooved track)
Which simple machine is a ramp?
Inclined plane
Is a bicycle a simple or complex machine?
Complex
What does motion mean?
Movement
What can mechanisms change?
Speed / Direction / Force / Type
What does a pulley make easier?
Lifting
Which simple machine is a seesaw
Lever
Name one simple machine in a bike (not screw)
Wheel and Axel / Pulley
What is speed?
How fast something moves
Do all machines have a mechanism?
Yes
What is the load?
The object being lifted
What does a wedge do?
Split / Cut
Why are complex machines useful?
They make work easier/faster
What is direction?
Way something moves
What does a mechanism do vs a machine?
mechanism changes motion, machine does work (making it easier)
What happens when you pull the rope?
Wheel moves, load lifts
Name TWO simple machines in scissors (not screw)
Lever + Wedge
Name two simple machines in a wheelbarrow?
Lever + Wheel and Axle (sometimes screw)
What can a force do? (name 2)
Start / Stop / Change Speed / Change Direction
Give an example of a mechanism in real life
Gears / Pulley / Breaks / Pedals
Where might you see a pulley in real life?
Crane / Flag Pole / Window Blinds / Elevator