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Scientific Method

Unit 1: Chpt 1

Biology The study of living things
Organism A living thing
Scientific method A process of investigation in which problems are identified and their suggested explanations are tested by carrying out experiments
The scientific method steps (1-3) 1)observation 2) hypothesis 3) experimentations 1)Observations can be sensed by our senses or by the use of equipment. 2)Hypothesis is an educated guess based on observations. 3) a series of experiments will be designed to test a hypothesis.
The scientific method (4-5) 4) interpretation of data 5)publishing results 4)Data is the measurements, observations of information collected from experiments 5) publishing the results of experiments allows other scientists to examine and analyse the results. New ideas =available to scientists. Adds to a growth of understanding
Theory A hypothesis that has proven to be true after a series of experiments
Principle or Law Arises from a theory that has been shown to be valid when fully tested over a long period of time
Principle Of Experimentation 1)Careful planning and design 2)Ensure that equipment is safe 3)design a control experiment 4)Experiments must be fair:sample size,random sample selection,double blind testing
The Scientific Method Steps 1) Observations 2) Hypothesis 3) Experimentations 4)Interpretation of data 5)Publish data
Variable A factor a factor that may change in an experiment
Ensure that experiment is safe 1)tie back long hair 2)wear safety goggles 3)be careful when handling chemicals
Control Used to provide a standard against which the experiment can be judged
Sample size
Random sample selection
Double blind testing
Limitations of Scientific Method 1)Extent of our knowledge 2)Basis of investigation 3)Interpreting results 4)Changes in natural world 5)accidental discoveries 6)Ethical issues
Created by: RintaC