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Unit 6. Machines
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Archimedes invented machines, for example a giant screw to ...
lift water.
Archimedes invented a large ...
claw- to lift boats out of the water.
Archimedes used mirrors to...
reflect sunlight and start a fire.
Archimedes invented a catapult to ...
fire large boulders at boats.
What did Kirkpatrick invent?
Pedal bicycle
A see saw is an example of a _______.
lever
the longer the ramp the _____ inclined it is.
less
limpiaparabrisas
windscreen wiper
tornillo
screw
plano inclinado
inclined plane
cuerda
rope
polea
pulley
eje
axle
rueda
wheel
cascanueces
nutcracker
alicates
pliers
levantar
to lift (regular)
subijbaja 
see-saw
esfuerzo
effort
carga
load
palanca
lever
punto de giro
pivot point
barra rigida
rigid bar
two inclined planes back to back, for example an axe
wedge
to make something move up
to lift
it is a simple machine consisting of a ramp used to lift or lower objects
inclined plane
it is a rigid bar that goes through the wheel to help it stay in place
axle
it is a simple machine with a wheel and axle and a rope, used to lift objects
pulley
the force of the object we need to move
load
the force we apply to the object.
effort
it is the point where the lever turns.
pivot point
It is a rigid bar with a pivot point.
lever


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