Inclined Plane
Name 2 examples of inclined planes in everyday life.
ramp
stairs
slide
hill
seesaw
scissors
back of hammer
scale
What is a screw?
A screw is an inclined plane wrapped around a cylinder.
Name 2 examples of a wheel and axle used for transportation.
wheelbarrow
skateboard
wagon wheel
Give 2 everyday examples of a pulley.
water well
clothes line
bike-chain
elevators
curtains
flag pole
sail
construction crane
What is an inclined plane?
An inclined plane is a flat surface tilted at an angle, with one end higher than the other, used as an aid for raising or lowering a load.
What is a lever?
A lever is a rigid bar resting on a fulcrum.
What are the 2 functions of the screw?
It can move a load or hold objects together.
What is a wheel and axle?
A wheel and axle is a rod that connects to a wheel. When the axle turns so does the wheel!
What is a pulley?
A pulley uses a rope and a grooved wheel to move a load.
How does an inclined plane make work easier?
It is easier to slide an object up a ramp than to carry it up something.
How does a lever help lift a heavy load?
It is used to help move a heavy load on one end when force is applied to the other end.
What is a wedge?
A wedge is a triangular prism that is used to split something into two pieces. It is 2 inclined planes put together.
Name a wheel and axle that is not used for transportation.
doorknob
merry-go-round
ferris wheel
steering wheel
How does a pulley reduce work?
By reducing the effort needed to lift an object by increasing the distance over which the effort is applied.
True or False: all inclined planes make work easier.
False, a steep inclined plane may not make work easier.
This is the word for the part of a lever that the bar rests on.
Fulcrum
What is an example of a wedge in real life?
knife
axe
nail
needle
scissors
True or False: A pulley system uses a wheel and axel
True! A pulley system uses a grooved wheel attached to an axle and a rope to rotate it.
True or False: More wheels and ropes on a pulley make it easier to move the load.
True, you can reduce the effort you need to lift the weight by having more wheels and ropes.
What are the actions you can use with an inclined plane when moving something?
push
pull
roll
True or false: The further the load is from the fulcrum, the easier it is to move.
False. the closer the load is to the fulcrum, the easier it is to move.
How are a wedge and inclined plane different?
A wedge is used to split things apart, an inclined plane is used to move objects from one level to another.
The big difference between a wedge and an inclined plane is that, while the inclined plane stays still, a wedge moves to do its work.
How to wheels reduce work?
They reduce work by reducing the amount of friction used to move an object.
How does a movable pulley look different than a fixed pulley?
A movable pulley is not attached to anything. A fixed pulley is attached to something (wall, ceiling, pole, etc.)