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Labs and write-ups

Labs and write-ups. Mrs. Kay. Scientific Law:. something that has been observed so many times by scientists that they are convinced that it will always happen. A statement of regularity found in observations made on a system. Eg. Gravity. Scientific Theory.

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Labs and write-ups

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  1. Labs and write-ups Mrs. Kay

  2. Scientific Law: • something that has been observed so many times by scientists that they are convinced that it will always happen. • A statement of regularity found in observations made on a system. • Eg. Gravity

  3. Scientific Theory • something that is believed to be true, but not proven beyond a doubt. • An attempt to explain an observed regularity. It is a guess at the underlying principles which can explain a group of related observations. • Eg. Atomic theory

  4. Hypothesis • An idea of what will happen during an experiment • A tentative explanation of the regularities observed in nature.

  5. Your Lab write-ups: • Top right corner: your name, your lab partners, date. • Top middle: name of the lab • Purpose/objective: in a statement write why we are performing the experiment • Materials: list all the materials we used in the experiment. Can refer to lab handout if applicable

  6. Procedure: write out step by step how to perform the lab. Usually provided, so can state “refer to lab handout”, unless you are writing the procedure. • Variables: state the variables for the lab if necessary. • Observations: Include any tables that state observations (qualitative or quantative)

  7. Observations: • Qualitative Observations: ones where we describe something using words, adjectives. • Quantitative (quantity) observations: ones where we describe something using numbers, measurements.

  8. Analysis: Answer any questions that have been asked. May include graphs/charts/diagrams. • Conclusion: If the purpose asked a question then you must answer it, otherwise use a concluding statement. If % error can be calculated, place it here. Discuss possible errors that led to a high % error and modifications to improve the lab.

  9. Variables: • Independent: thing (condition) that you change during an experiment. You manipulate this factor. • Dependent: this factor (condition) changes or responds because of your experiment. • Control: a comparison that keeps your experiment fair. Things you keep constant.

  10. Example • How well you do in this course depends on how much you study. • Independent: your studying • Dependent: mark

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