Force and Motion
What is a push or pull on an object?
force
What is a lever?
a simple machine that helps lift things
What is a pulley used for?
to lift heavy objects
What is an inclined plane?
a flat surface that is tilted
What is a wheel and axle?
a simple machine made of a wheel attached to a rod
What do we call the change in position of an object?
Motion
What part of the lever is the point where it pivots?
fulcrum
What is a simple pulley made of?
a wheel and a rope
Name an example of an inclined plane.
ramp
How does a wheel and axle make movement easier?
It reduces friction.
If you push a toy car, what happens to its motion?
It moves forward
Name a common example of a lever.
seesaw
Name a place you might find a pulley.
(varius)
How does an inclined plane help with lifting?
It allows you to use less force over a longer distance.
Name a common example of a wheel and axle.
bike
What two things do you need to make a force?
Object and direction
How does a lever make it easier to lift heavy objects?
It uses less effort
How does a pulley make work easier?
It changes the direction of the force.
What is the advantage of using an inclined plane?
It makes it easier to move objects upward.
What is the mechanical advantage of a wheel and axle?
allows for easier movement of heavy objects
What is the force that pulls objects toward the Earth?
gravity
What is the mechanical advantage of a lever?
It allows you to lift heavier loads with less force.
What is a system of pulleys called?
block and tackle
What is the formula for the mechanical advantage of an inclined plane?
the length of the incline divided by the height
How do wheels help in transportation?
They allow vehicles to move smoothly.