Scientific Method - cabarrus.k12.nc.us
Scientific Method
Developed by in 2nd Century A.D.
• Series of followed by scientist to .
A.
• State the problem in the form of a question to be answered.
B.
• 1. Making
• 2. Making initial (quantitative)
• 3. Organizing data
• 4. Classifying data
C. Hypothesis
• Form a (educated guess) make a to answer problem.
• to the hypothesis which maybe supported or refuted.
D.
• Experiments test the
• Variables – any factors that may influence the experiment
o 1. Experimental Factor
o Control
• Only variable may be tested at a time.
• Safety
EXPERIMENT
• Experiment based on the comparison of a and an .
• All variables in an experiment are the same except for factor
• variable; the variable manipulated by scientist
• variable; the factor that is being or during the experiment - variable.
E.
• Observe and record from experiment.
• Present data in graphs.
F.
• Draw conclusions by inferring a resolution based on the facts.
• Determine whether the is supported or refuted.
G.
• Accurately report research methods, results and conclusions
• Modeling – a visual, verbal or mathematical representation of an object
• Communicating – make a presentation, publish in a journal, share data with other scientist
H.
• A hypothesis that is supported by experimental evidence over a long period of time
KINDS OF RESEARCH
• Science – for sake of knowledge
• Science (technology) – research to solve practical problems; practical use of acquire knowledge.
• Quantitative - involves measuring
• Qualitative -
SCIENCE AND SOCIETY
- the study of what is and of moral choices as they are applied to biological concerns
• 1. Evolution – creationism vs. evolution
• 2. Genetic engineering – how far can we go? How far should we go?
• 3. AIDS- education, prevention, treatment
• 4. Abortion- as a means of saving life, a means of contraception
Based on decides what is considered .
TOOLS OF THE BIOLOGIST
• General lab equipment
• Microscope objects
• Ultra spins mixture of cell parts based on density.
• separation of mixtures
• - separate substances in a mixture by how fast they move when subject to an .
• Scientific - collecting small samples to represent an entire population
• Computer – record and coordinate large amounts of data.
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