A stick that can pivot at a point is known as the lever arm In the scientific method, the problem is the: The purpose of the experiment In the scientific method, the hypothesis is: an educated guess In the scientific method, the procedure is: A detailed, step-by-step process The ________ is the force needed to lift or move the load. effort What defines a class-1 lever? the fulcrum is in between the load and the effort The greater the distance from the fulcrum to the effort, the ___ effort is required less The unit used to measure force is called newton In a class-1 lever, effort applied downward, moves the load upward A class-2 lever has the ____ in the middle load A class-3 lever has the _____ in the middle effort Spring scales should always start at ___ zero We look at the _____ on a spring scale newtons A simple machine is something that makes work ____ easier What are the 4 parts of a lever system? load, fulcrum, effort, lever arm The ____ is the point around which the lever arm can pivot fulcrum The word pivot means .... to move
Test Review 
Test review 