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Pg. 16 RTW: HAPPY FRIDAY!

Pg. 16 RTW: HAPPY FRIDAY!. We are testing a new method of incubating baby sea turtles. The facility in Port Orange is running the study. They are using 30 turtle eggs in two groups. Group A will use the new incubation method where Group B will use the old method.

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Pg. 16 RTW: HAPPY FRIDAY!

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  1. Pg. 16 RTW: HAPPY FRIDAY! • We are testing a new method of incubating baby sea turtles. The facility in Port Orange is running the study. They are using 30 turtle eggs in two groups. Group A will use the new incubation method where Group B will use the old method. • Name the independent and dependent variables. • Name 3 variables to change and the control.

  2. Hypotheses, theories,& laws

  3. Hypotheses • Hypothesis= a tentative explanation of an observation or pattern which has been observed in nature. • Hypotheses are more tentative than theories, but more importantly, they apply to a rather specific and narrow set of circumstances, while a theory applies to a great number of problems.

  4. Theories • A theory is a highly successful hypothesis. • Theories make predictions and can be tested. • Any scientific theory is subject to change as our ability to make tests, or make observations of a test’s results, improves with time. • Ex: The Theory of Evolution • This is a theory (as opposed to a hypothesis) because it has very broad applications and explanatory power. We can explain the entire fossil record and the genetic code of all plants, animals and other forms of life using this theory.

  5. Developing Theories Once a hypothesis is supported by repeated experimentation, it may become a theory. • A theory is a well-testedexplanationfor a set of observations • A theory may need to be revisedto explain new observationsor new experimental results

  6. Requirements: • A successful theory is repeatable. • By you. • By anyone. • Assumes: • Objective reality • We all see the same world. • Constant Laws of Nature • What happens here, happens there. • What happened yesterday will happen tomorrow.

  7. Laws • Law= readily observable fact • Doesn’t needed to be tested • Ex: The Law of Gravity • This law tells us the size of the gravitational force, but it does not explain why gravity exists or even why it is as strong as it is. • Theories won’t “grow up” to become laws!

  8. Scientific laws • A scientific lawsummarizes the resultsof many observations and experiments. • Theories do NOT become laws! • A scientific law doesn’t try to explain, explanation • requires a theory. • Successful models can help visualizedifficult concepts and predict new observations.

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