What is the power?
The power is the force applied to the pump-handle.
What is the fulcrum?
The fulcrum is the screw that fastens the handle to the pump.
What is the weight?
The weight is the water raised by the bucket.
Are scissors an example of the lever?
Yes; scissors are a double lever.
What is the fulcrum in the scissors?
The fulcrum is the rivet which holds the two levers together.