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Methods of Science
scientific method sec 1.3
| Question | Answer |
|---|---|
| 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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