Using one or more of your senses to gather information
Doesn't involve numbers or measurements
Are precise and factual
Descriptions using numbers
Involves counting or measurement
Explanations of events based on observation.
Can have more than one. Are logical and tentative
Making a forecast of what will happen in the future based on past experience or evidence
A possible explanation for a set of observations to a scientific question
Anything that can change or vary in an experiment
Manipulated Variable (MV)
A factor changed on purpose by the experimenter.
MV also known as
the independent variable (IV).
Responding Variable (RV)
A factor expected to change because of the manipulated variable.
RV also known as
the dependent variable (DV)
is what the experimenter will measure and record.
The factors that are kept the same in an experiment.
The more constants in an experiment, the better to determine the effect of the MV.
An investigation in which all variables but one remain the same
Standard for Length
amount of push or pull on an object
Standard for Force
amount of pull due to gravity
Standard for Weight
amount of space an object takes up
Standard for Volume
liter (L)/cubic centimeter (cm3) or cc
measure of motion of matter particles
Standard for Temperature
degrees Celsius (*C)
An approximation of a number based on a reasonable assumption
Estimate - Not the same as
How close a measurement is to the true value
How close a group of measurements are to each other
= Sum of Values divided by the Total number of Values