A simple machine has...
many parts
2-4 parts
1 or 2 parts
A complex machine has...
3 parts
1-2 parts
Many parts
A simple machine uses energy from...
People or animals
Electricity
Animals
A complex machine uses energy from...
Electricity or combustion
Animals or people
Electricity
A lever is...
A rigid bar with a fulcrum
A flexible bar with a fulcreus
A bar
The types of simple machines are...
Levers, wheel and axle and pulleys, and inclined planes
It's the point where the lever turns.
FULCRUM or PIVOT POINT
It's the force exerted by the object.
LOAD
It's the force applied by the person.
EFFORT
What are the types of levers?
1- Fulcrum in the middle 2- Load in the middle 3- Effort in the middle
A wheel and axle and pulleys make it...
MORE DIFFICULT TO LIFT OR LOWER HEAVY OBJECTS
EFFORTLESS
EASIER TO LIFT OR LOWER HEAVY OBJECTS
Say the parts of a pulley
WHEEL, AXLE, GROOVE and ROPE
What's an INCLINED PLANE?
It's a ramp used to LIFT and LOWER objects
it's the simplest machine: it only has 1 part.
INCLINED PLANE
The longer the ramp...
the less inclined it is.
Archimedes invented simple machines with...
CATAPULT, MIRRORS, SCREW and LEVER
