one factor changed by the person doing the experiment; "manipulated variable"
factors being measured in an experiment; changes in response to the changes in the independent/manipulated variable; also known as the "response variable"
What does a scientist do after she manipulates (changes) the manipulated (independent) variable?
dependent variable; responds to changes in other variables in the experiment; the factor being measured in an experiment (what is observed AFTER the experiment)
independent variable; the one factor that is changed by the person doing the experiment (what we know before the experiment)
quantities that a scientist wants to remain the same (constant); must be observed as CAREFULLY as the response variables
Experimental Scientific Method
a set of scientific processes that scientists use to answer questions and solves problems in the world around them (cause/effect relationships)
an experiment in which ONE variable is changed and the outcome is compared to a standard (control)
Standard or Control
the basic procedure used in a controlled experiment, before changing any of the variables
a statement that describes what an experiment/investigation showed, based on observations and data
shows the outcome of a series of experiments when a variable is changed by increment (steps)
a mass hung from a fixed point, free to swing back and forth when put into motion (grandfather clock, swing)
any motion of an object that periodically repeats (example: one full swing of the pendulum=one cycle)