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chapter one: Nature of Science
vocab words
24
Science
10th Grade
09/17/2012

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Term
scientific method
Definition

An organized set of investigation procedures.

 

Six common steps: 

  1. state the problem
  2. gather informaiton
  3. form a hypothesis
  4. test the hypothesis
  5. analyze data
  6. draw conclusions
Term
hypothesis
Definition
a possible explanation for a problem using what you know and what you observe.
Term
experiment
Definition
a way to test a hypothesis, uses the effect of one thing on another using controlled conditions.
Term
variable
Definition
quantity that can have more than a single value.
Term
dependent variable
Definition
the value changes according to the changes in the other variables
Term
independent variables
Definition
the variable you change to see how it will affect the dependent variable.
Term
constant
Definition
a factor that does not change when other variables is changed.
Term
control
Definition
the standard by which the test results can be compared.
Term
bias
Definition
occurs when the scientist expects changes how the results are viewed.
Term
model
Definition
represents an idea, event, or object to help people understand better.
Term
theory
Definition
an explanation of things or events based on knowledge gained from many observations and investigations.
Term
scientific law
Definition
a statement about what happens in nature and seems to be true all of the time.
Term
technology
Definition
application of science to help people.
Term
standard
Definition
an exact quantity that people agree to use to compare measurements.
Term
SI
Definition
universally accepted standard throughout the world for scientists.  The metric system.
Term
mass
Definition
measurement of the quantity of matter in an object.
Term
density
Definition
mass per unit volume
Term
derived unit
Definition
a combination of SI units
Term
graph
Definition
a visual display of data
Term
line graph
Definition
show how a relationship between variables changes over time.
Term
x-axis
Definition
the horizontal line, the independent variable
Term
y-axis
Definition
vertical line, dependent variable
Term
bar graph
Definition
useful for comparing counted information
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