1 / 21

Scientific Inquiry and the Scientific Method

Scientific Inquiry and the Scientific Method. Understanding the World Around Us. Vocabulary Introduction. Observations/Facts you make with your senses that you know to be true . Quantitative : numbers Qualitative : descriptions that cannot be put in numbers. Vocabulary Introduction.

Télécharger la présentation

Scientific Inquiry and the Scientific Method

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Scientific Inquiry and the Scientific Method Understanding the World Around Us

  2. Vocabulary Introduction • Observations/Facts you make with your senses that you know to be true. • Quantitative: numbers • Qualitative: descriptions that cannot be put in numbers

  3. Vocabulary Introduction • A time-tested concept that makes predictions about the natural world. Once proposed, it must be tested over again. It may be thrown out or modified.

  4. Vocabulary Introduction • If a theory survives many tests it becomes a law. It summarizes observed experimental facts.

  5. Vocabulary Introduction • An explanation or interpretation of observations. • Inferences are based on reasoning, not random guessing

  6. Vocabulary Introduction • A forecast of what will happen in the future • Based on past evidence or observations.

  7. Vocabulary Introduction • Observations/Facts you make with your senses that you know to be true. • Quantitative: numbers • Qualitative: descriptions that cannot be put in numbers • A time-tested concept that makes predictions about the natural world. Once proposed, it must be tested over again. It may be thrown out or modified. • If a theory survives many tests it becomes a law. It summarizes observed experimental facts.

  8. Vocabulary Introduction • An explanation or interpretation of observations. • Inferences are based on reasoning, not random guessing • A forecast of what will happen in the future • Based on past evidence or observations.

  9. Steps of Scientific Inquiry • Uses senses to make observations. • Makes inferences or predictions based on observations. • Research the topic • Form a hypothesis • Design a controlled experiment to test the hypothesis • Perform the experiment and record data • Draw a conclusion Hypothesis is Accepted Hypothesis is Rejected Becomes a Theory Go back and redesign your hypothesis Accepted many times and proven mathematically Becomes a Law

  10. Variable The one part of an experiment that is manipulated by the scientist Present in the experimental group, not present in the control group. Example: If you were testing the strength of different paper towels (like you did last year) the type of paper towel will be the variable.

  11. A Controlled Experiment Has… Control Group • Setup according to “normal” conditions Experimental Group • Same as the Control Group, but with the variable Important Points: • They are exactly the same except for the experimental group having the variable(the one difference) • The larger the sample size, the more accurate the results

  12. What is the variable (the one difference between the groups)?

  13. Hypothesis Formation If • The conditions you are setting up (control group vs. experimental group) Then • Your predicted results. • (what you think will happen) Because • Your explanation for your predicted results. (why)

  14. Independent Variable • The manipulated/experimental variable • This variable is the one you manipulate • What you the scientist can change • The responding variable • This is what you measure in the experiment • This variable’s value depends on the independent variable. It shows the results of your manipulation Dependent Variable

  15. Experiment… • Does adding coffee grinds to plants help them grow faster? • Do people prefer Jerry’s Pizza or Lucio’s Pizza? • Dep:_____________ • Ind:_____________ • Dep:_____________ • Ind:_____________

  16. Data TablesTo Properly Create a Data Table • Title • The title must describe what is being done. It must be in the following form. The Relationship Between the Independent Variable and the Dependent Variable • Columns & Rows: • Determine the number of rows and columns • First row is for headings • 1st Column  Independent Variable • 2nd Column  Dependent Variable

  17. Data Tables cont..To Properly Create a Data Table • Labels • Label each column (what does the data represent) • Units • Put units for the numbers • Example: ml, cm, etc… • Sort Data • Place in an order, either least to greatest or greatest to least.

  18. Constructing a Graph The Relationship Between the Independent and the Dependent Variable Title Axis Labels and Units The independent variable goes on the x-axis (horizontal) and the dependent goes on the y-axis (vertical Dependent Variable Independent Variable

  19. Constructing a Graph cont.. Line Graph vs. Bar Graph • Bar Graphs are used to graph information that is not continuous. • Example: Mrs. Fugarino believes that student’s behavior in class is directly related to the teacher’s hair color. She conducted a study and discovered the following results which are graphed below.

  20. Steps of Scientific Inquiry

More Related