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Scientific Investigation - Lesson 1
Transcript of Scientific Investigation - Lesson 1
"If I have seen a little further, it is by standing on the shoulders of giants."
Sir Isacc Newton
What is science?
Science: study & comprehension of natural phenomena
Hypothesis vs. Scientific Theory vs. Scientific Law
Questions NOT Answered by Science
beliefs / religion
meaning of life
Technology: application of science
Scientific Skepticism: questioning claims rather than accepting them based on faith and anecdotes
Scientific Law: statement based on repeated experimental observations that describes some aspect of the world, always applies under the same conditions, and implies that there is a causal relationship involving its elements
Hypothesis: proposed explanation made on the basis of limited evidence as a starting point for further investigation
Scientific Theory: well-substantiated explanation of some aspect of the natural world that is acquired through the scientific method, and repeatedly confirmed through observation and experimentation
Inductive vs. Deductive Reasoning
Deductive Reasoning: determines a single fact from a general statement, only as accurate as the statement
Inductive Reasoning: determines a general statement from several individual facts
inductive reasoning - the truth of the reason does not guarantee the truth of the conclusion
inductive reasoning involves reaching conclusions about things that were not observed
Relativistic mechanics - Einsteins laws accurate for human experience & beyond
What happens when we find disagreement in the prediction of long-standing theories?
Classical mechanics - Newton's laws accurate for most of human experience
Who are scientists & what do they do?
Do you have some misconceptions?
Scientists come from many backgrounds.
Scientists do many different things & work in many different occupations.
Scientists can have have really fun jobs.
Scientists are not always in the lab.
Branches of Science
Scientists must be good at communicating and cooperate with many other professions.
These are just a few examples!