General
Force x Distance
What is work?
The object being lifted is the __________.
What is load?
Another name for an inclined plane is a ____________.
What is ramp?
flagpole, fishing rod, elevators, and wells
What is a pulley?
The wheel and axle is made up of two parts: the wheel that turns on a post, which is called the __________.
What is axle?
You use a force to change the direction of an object. The object is at rest until you start doing work, then the energy is converted into ___________.
What is kinetic energy?
The push or pull that turns a lever is the ____________.
What is force?
If you use an inclined plane, the distance is longer, but it takes less _______________.
What is effort?
The pulley uses a ____________ and rope to lift a load.
What is grooved wheel?
What is screw?
This is a tool that makes work easier to do.
What is a machine?
A lever is a board or bar that moves on a _______________.
What is fulcrum?
An inclined plane is a simple machine that is a flat surface that is ___________ at one end.
What is higher or lower?
Two inclined planes placed back to back make this simple machine.
What is a wedge?
Using a screw takes ______________ force than pounding a nail.
What is less?
Using a machine allows us to use ____________ force to move something.
What is less?
The point where the lever turns is the _____________.
What is fulcrum?
The inclined plane is a simple machine that is a ___________________ that is higher at one end.
What is flat surface?
In a wedge, force is used to raise an object or _____________ the objects apart.
What is split?
Simple machine that makes work easier by reducing the amount of friction
What is a wheel and axle?
A simple machine is a machine with ______ or ______ moving parts.
What is few or no?
A lever can let you change direction of a force or it can change the amount of ______________ needed.
What is force?
Scientists think inclined planes may have been used to build the _______________ because the blocks were too heavy to move straight up.
What are pyramids?
A _________________ pulley is stationary.
What is fixed?
Just like an inclined plane, a screw moves a longer distance, but less ____________ is needed.
What is effort?