Chapter 1 vocab. cards Flashcards
bias
occurs when what the scientists expects changes how the results are viewed
constant
A factor that does not change when other variable change
control
The standard by which the test results can be compared
density
The mass per unit volume of a material
dependent variable
Its value changes according to the changes in other variable
experiment
tests the effect of one thing on another using controlled conditions
graph
A visual display of information or data.
hypothesis
a possible explanation for a problem using what you know and what you observe.
independent variable
a variable you can change to see how it will affect the dependent variable
mass
a measurement of the quantity of matter in an object
model
represents and idea, event, or object to help people better understand it
scientific law
a statement about what happens in nature and that seems to be true all the time
scientific method
an organized set of investigation procedures
SI
INTERNATIONAL SYSTEM OF UNITS
standards universally accepted and understood by scientists throughout the world
standard
an exact quantity that people agree to use to compare measurements
technology
the application of science to help people
theory
an explanation of things or events based on knowledge gained from many observations and investigations
variable
a quantity that can have more than a single value
volume
the amount of space occupied by an object
