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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