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Quiz over Investigation 2 content
will be on Friday November
21
Vocabulary:
Class 1 lever- has the fulcrum in the
middle and the load and effort at the ends
Class 2 lever- has the load in the middle and the fulcrum and effort
at the ends
Class 3 lever- has the effort in the middle and the fulcrum and the load at the ends
Diagram-
a drawing the describes the relationship of all the parts of a system ( this is also how we record information about
lever designs)
Inclined plane - simple machine used to make a wheelchair ramp
Advantage
of an inclined plane- EFFORT
Advantage of class 3 lever- DISTANCE
Advantage of a class 2 lever- EFFORT
Effort is REDUCED as the load moves closer to the fulcrum
Crowbar is a class 1 lever
Wheelbarrow is
a class 2 lever
A broom is a class 3 lever
There are 3 ways a lever can be
set up
Students will have to identify pictures of these three ways (class 1, class 2, class 3)
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