Study

Physical Science - Chapter 1 Test Review

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  • educated guess based on knowledge and observation
    hypothesis
  • What are the 3 categories of science ?
    life, earth, & physical
  • interval between two events
    time
  • statement about something that always seems to be true
    scientific law
  • changed to determine how it will affect the dependent variable
    independent variable
  • the amount of space an object occupies
    volume
  • mass per unit volume of a material
    Density
  • the standard to which test results can be compared
    control
  • an improved version of the metric system used and understood by scientists worldwide
    SI
  • exact quantity that people agree to use for comparison
    Standard
  • visual display of information or data that is used to detect patterns
    graph
  • shows a relationship where the dependent variable changes due to a change in the independent variable
    line graph
  • an explanation based on many observations and investigations
    theory
  • Organized set of investigation procedures
    scientific method
  • A unit obtained by combining different SI units is called....
    derived unit
  • compares a measurement to the real or accepted value
    Accuracy
  • describes how closely measurements are to each other and how carefully they were made
    Precision
  • measure of matter in an object
    mass
  • show how a whole is broken into parts
    circle graph
  • changes value as other variables change
    dependent variable
  • A variable that does not change when other variables change
    constant
  • measured using a thermometer
    temperature
  • measured using a unit appropriate for the distance between two points
    length
  • independent variable is found on which axis
    x-axis
  • represent ideas, events, or objects and can be physical or computerized
    models
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