25 terms

# Chapter 2 Science Test

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experiment
Tells/finds the relationship between variables
scientific model
shows how each variable relates to another based on the results of an experiment
mental model
physical model
a model you can look at, touch, feel, and take measurements from
conceptual model
a way to show how something works that is descriptive in nature
graphical model
a graph showing how two variables are related
dependent variable
a variable that changes based on another variable
independent variable
a variable that you control and change, the experimental variable
experimental variable
a variable that you control and change, the independent variable
y
the dependent variable goes on the _ axis
x
the independent variable goes on the _ axis
data
if a graph is created from accurate ___, the prediction will also be accurate
cause and effect
the relationship between two variables is also known as a _______ relationship
pattern
to have a relationship between variables, the graph must show a what?
strong
a relationship where a small change in one variable makes a big change in the other is ____
weak
a relationship where a big change in one variable has little effect on the other is ____
inverse
a graph with a negative slope (points down to the right) shows what kind of relationship?
velocity
a distance vs. time graph shows speed, whereas a position vs. time graph shows...
position
where something is compared to where it started
distance
an interval of length without regard to direction
rise
the vertical change of a graphed line
run
the horizontal change of a graphed line
slope
rise over run
average speed
total distance traveled divided by total time taken
instantaneous speed
the speed at a specific point in your journey