prologue Flashcards
the use of senses to gather pieces of information
observation
When we form an educated guess/hypothesis using the information from an observation
inference
The organization of info into groups based on similarities
classifcation
Describes the properties of an object numerically
All contain a number and a unit
Comparison to a known standard
Gives precise and universal meaning to observations
measurements
the amount of matter in a given amount of space
density
the amount of matter in an object
mass
the amount of space an object occupies
volume
water is densest as a ___________.
liquid
what can temporarily change density?
temp and pressure
as temperature increases, the molecules ________ and the density _____________.
expands and decreases
as pressure increases, the molecules _________ and density ___________.
contract and increases
both variables increase
direct relationship
how fast something is happening
rate of change
as one variable increases, the other decreases
indirect relationship
variables repeat in a repeating pattern
cyclic relationship
