20 terms

biology A unit 1


Terms in this set (...)

use of one or more of the senses—sight, hearing, touch, smell, and sometimes taste—to gather information
dependent variable
The experimental factor that is being measured; the variable that may change in response to manipulations of the independent variable
responding variable
dependent variable
independent variable
the experimental factor that is manipulated; the variable whose effect is being studied
manipulated variable
factor in an experiment that a scientist purposely changes; also known as independent variable
control set up
the control set up is a particular sample that is treated the same as all of the rest of the samples and is not exposed to the change (manipulated variable), The experimental set up without the manipulated variable. The purpose of the control setup is to give you a point of comparison for your results from the experiment.
experimental set up
The part of an experiment in which all factors except one remain constant
controlled variables
All factors in the experiment that are not allowed to change throughout the entire experiment. Controlling constants is very important to assure that the results are due only to the changes in the independent variable, variables that are kept constant so that the changes that we observe are only due to the independent variable that we change
experimental error
flaw in design of procedure
experimental trial
the number of times a procedure is repeated in an experiment
experimental replication
the amount of times an experiment is replicated
qualitative data
Descriptions from observations that do not usually contain numbers
quantitative data
Information from experimentation obtained by counting or measuring
An organized way of using evidence to learn about the natural world
possible, testable explanation for a set of observations or possible answer to a scientific question
scientific theory
a well-tested concept that explains a wide range of observations, an explanation or model backed by results obtained from many tests or experiments
scientific law
a statement that describes what scientists expect to happen every time under a particular set of conditions, a rule that describes a pattern in nature, a statement that summarizes a pattern found in nature
a pattern over time, such as increasing, decreasing, or staying the same, that is shown by data in part or all of the graph, the way a system is generally developing or changing; current style, the overall direction taken by the data path
Any data point that sticks out. NOT all data sets have one., an individual value that falls outside the overall pattern
evidence; information gathered from observations, observations and measurements recorded during an experiment