Scientific Method

Scientific Method - Scientific Method M. Andrea Ward...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
Scientific Method M. Andrea Ward General Biological Sciences
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
THE WHOLE PROCESS There are different terms used to describe scientific ideas based on the amount of confirmed experimental evidence. Hypothesis - a statement that uses a few observations - an idea based on observations without experimental evidence Theory - uses many observations and has loads of experimental evidence - can be applied to unrelated facts and new relationships - flexible enough to be modified if new data/evidence introduced Law - stands the test of time, often without change - experimentally confirmed over and over - can create true predictions for different situations - has uniformity and is universal
Background image of page 2
Standard Scientific Method The process whereby scientific theories are supported or rejected is called the Scientific Method. It is a systematic approach to advancing knowledge.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Six Interrelated Steps OBSERVATION QUESTION HYPOTHESIS PREDICTION EXPERIMENT CONCLUSION
Background image of page 4
Every Day Life Observation: car won’t start Question: Why won’t the car start? Hypothesis: The battery is dead. Prediction: If….then…. . Experiment: Replace the battery Conclusion: The car started. The hypothesis was correct.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Redi’s Experiment An example of the Scientific method is an experiment conducted in the early 1600’s by Francesco Redi. Redi used the scientific method to test the hypothesis that flies do not arise spontaneously from rotting meat.
Background image of page 6
Flies swarm around meat left in the open; maggots appear on meat. Place meat in each jar. Obtain identical pieces of meat and two identical jars. Flies produce the maggots; keeping flies away from meat will prevent the appearance of maggots.
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Experimental variable: gauze prevents entry of flies Controlled variables: time, temperature, place Results Control situation Experimental situation Spontaneous generation of maggots from meat does not occur; flies are
Background image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/07/2008 for the course BIO 101 taught by Professor Ward during the Fall '07 term at Shepherd.

Page1 / 26

Scientific Method - Scientific Method M. Andrea Ward...

This preview shows document pages 1 - 9. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online