Vocabulary
a push or a pull
a force
An ax is an example of this simple machine...
wedge
This simple machine gives cars, trucks, bikes, etc. their ability to travel...
wheel and axle
Simple machines help to make work easier by...
decreasing the effort needed.
pulls objects toward the center of the Earth
gravity
a measure of the distance an object travels in a certain amount of time
speed
A wheelchair ramp is what type of simple machine...
inclined plane
This simple machine includes an inclined plane wrapped around a post.
screw
For a satellite to stay in orbit around Earth, it has to be moving forward very fast all the time. This force will make it fall to Earth if it goes too slowly.
gravity
describes the location of an object
position
the point on which a lever rests; the fixed point
fulcrum
A light bulb includes which simple machine...
screw
Simple machines change the amount of _____________ needed to do work.
force
An object may move when a _______ is applied to it.
force
when two objects rub together; causes heat and slows the speed of an object
friction
this is done when a force moves an object over a distance
work
A doorknob includes this simple machine.
wheel and axle
This simple machine changes the direction of force needed to do a task without changing the size of the force needed.
pulley
An object is being pulled to the right. To make the object move to the left, you would have to apply a force to the left that is ________________ the force to the right.
greater than
measure of the gravitational pull of an object on Earth
weight
Simple machines have _______ moving parts.
few/no
If you wanted to lift a bucket of water out of a well, you would use this simple machine.
pulley
This simple machine helps a boat slice through the water.
wedge
An object that is pulled with the least amount of force will _________________.
the slowest
A machine with few or no moving parts.
simple machine