Simple Machines
The purpose of simple machines is to
Make doing work easier
When a substance is dissolved that means that
The particles are broken down into such small pieces you cannot see them anymore
The scientific method is
A series of steps that scientists go through when performing an experiment
A wheel and axle with a rope or chain wrapped around it used to lift objects up and down is
A pulley
A mixture is
A combination of substances mixed together but CAN be separated
Using our five senses is called
Observation
A compound machine is
A combination of two or more simple machines
A solution is
A combination of substances that cannot be separated
An independent variable is
The variable in the experiment that "I" change
A door stop is an example of which simple machine
A wedge
Examples of solids that do not dissolve in water
rocks, aluminum foil, wood chips, etc.
The dependent variable is
The variable that changes as a result of the independent variable
A bar supported by a fulcrum is which simple machine
A lever
When dissolving substances in hot water, the hot water causes the particles to
Heat up quickly, causing it to dissolve faster than cold water
The conclusion of the experiment includes
The results and answers the question you were trying to solve