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Methods of Science

scientific method sec 1.3

Usually the beginning of scientific inquiry.. direct method of gathering information in an orderly way ( involves recording information..photographs, draw pictures) Observation
combining what you know with what you have learned to draw logical conclusions is called _____ and the conclusions are called _____ inferring, inferences
organized series of events that helps scientists answer questions .. .Questions and collected info help scientists form hypothesis. Experiments are conducted, hypothesis may or may not be supported Scientific methods
Basic steps of most scientific methods ( approximately 6 steps) observe, collect information, ask questions, infer and form hypothesis, experiment(collect data), conclusion
information gained from observations data
two types of data or two types of observations quantitative and qualitative
type of data collected as numbers( measurements of time, temperature, length, mass, area, volume etc0 quantitative
type of data that are descriptions of what our senses detect ( interpretations vary as not all sense things in the same way) qualitative
key elements needed as a biologist appraches their research (4... I, C,C,L) imagination, curiousity, creativity, logic
a testable explanation of a situation ... often written as an IF... THEN statement hypothesis
can happen in science when you get accidental or unexpectged but fortunate results Serendipity
What are two possible fates of a hypothesis that has been tested... when supported and when not supported a hypothesis supported by data from additonal investigations , it is usually considered valid and accepted by scientific community.. hypothesis not supported is revided and more investigations occur
A group in an experiment used for comparison. This group is not given the experimental factor ( the manipulated variable)... but all other aspects of this groups are identical to the other group or groups control group
the group exposed to the factor being tested. they should be the same as the other group or groups as far as everything else experimental group
Number of factors that change in a controlled experiment ONE
the factor that changes in an experiment independent variable ( manipulated variable)
the factor that you are measuring.. it happens because of the change to the independent variable. dependent variable
factors that remain fixed during an experiment.... you only have one factor you change..this is not that factor constants ( also called controls)
Biologists conduct investigations other than controlled experiments with the manifpulation of variables... describe briefly what they do They spend their careers discovering and identifying new species. Some use computers to model behavior of organisms and systems. THE PROCEDURES INCLUDE OBSERVATION AND COLLECTIONS OF DATA
What is the major question that should be asked after a biologist finishes an investigation Has my hypothesis been supported
Is one test of the experiment all that is necessary for a scientific investigation No ... the investigation must be repeated many times to obtain consistent results
What are two simple ways to display data to look for patterns to help form explanation s table or graph
what generally happens before a scientist can publish their research in a journal a peer review ...
Biologist often work in teams.. and hold meetings to discuss on goin investigations, analyse data and interpret results... it is also important to Avoid__B____, repeat trials to get a large ___ Bias...... large sample size
Created by: shemehl
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