Science Vocabulary Quz on Friday, 1/28/11

Here are the science vocabulary words and definitions.

Lever Vocabulary

Advantage: A gain in effort or distance or a change of direction resulting

from the use of a simple machine.

Class-1 lever: A lever in which the fulcrum is between the load and the

effort.

Class-2 lever: A lever in which the load is between the fulcrum and the

effort.

Class-3 lever: A lever in which the effort is between the fulcrum and the

load.

Diagram: A drawing that describes the relationship of all the parts of a

system.

Effort: The force applied to move a load using a simple machine.

Fulcrum: The point at which a lever arm pivots.

Lever: A beam, free to pivot around a point, used to move a load.

Lever arm: A beam, free to pivot around a point.

Load: The weight or resistance that is moved using a simple machine.

Newton: The metric unit used to measure force.

Two-coordinate graph: A graph that shows relationships between two

variables.