1 / 0

Exploring Science: From Curiosity to Discovery

Delve into the world of science, where curiosity leads to discovery. Understand what science is and how it helps unravel the mysteries of the world. Experience a fascinating demo of proving the existence of the invisible with a simple candle in a jar experiment.

tambre
Download Presentation

Exploring Science: From Curiosity to Discovery

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 Method

  2. What is Science Science What is science? begins with curiosity and often ends with discovery is a system of knowledge and the methods you use to find that knowledge
  3. Demo – Candle in a Jar Can you prove the existence of something invisible? What do you predict will happen if the jar is covered? What invisible substances did you assume in your explanation? Oxygen, carbon dioxide
  4. Steps in the Scientific Method Observation Hypothesis Experiment Data Collection Conclusion Retest
  5. Observations Gathered through your senses A scientist notices something in their natural world
  6. Observations An exampleof an observation might be noticing that many salamanders near a pond have curved, not straight, tails Is information that you obtain through your senses
  7. Hypothesis A suggested solution to the problem. Must be testable Sometimes written as If…Then…statements Predicts an outcome
  8. Hypothesis An example of a hypothesis might be that the salamanders have curved tails due to a pollutant in the moist soil where they live.
  9. Experiment A procedure to test the hypothesis.
  10. Experiment Variable – factor in the experiment that is being tested
  11. Experiment A good or “valid” experiment will only have ONE variable!
  12. Scientific Experiments Follow Rules An experimenter changes one factor andobserves or measureswhat happens.
  13. The Control Variable The experimenter makes a special effort to keep other factors constant so that they will not effect the outcome. Those factors are called control variables.
  14. What is the Purpose of a Control? Controls are NOT being tested Controls are used for COMPARISON
  15. Other Variables The factor that is changed is known as the independent variable. The factor that is measured or observed is called the dependent variable.
  16. Example of Controls & Variables For example, suppose you want to figure out the fastest routeto walk home from school. You will try several different routes and time how long it takesyou to get home by each one. Since you are only interested in finding a route that is fastest for you, you will do the walking yourself.
  17. What are the Variables in Your Experiment? Varying the route is the independent variable The time it takes is the dependent variable Keeping the same walker throughout makes the walker a control variable.
  18. One more thing… it is best to make several trialswith each independent variable.
  19. Remember: To be a Valid Experiment: Two groups are required --- the control & experimental groups There should be only onevariable
  20. Data Results of the experiment May be quantitative (numbers) or qualitative
  21. Data Must beorganized Can be organized into charts, tables, or graphs
  22. Conclusion The answer to the hypothesis based on the data obtained from the experiment
  23. Retest In order to verify the results, experiments must be retested.
  24. Solving a Problem 1)Identify a Problem 2) State Observations about the problem 3) Form a Hypothesis about the problem (if…then…) 4) Design an Experiment to test the hypothesis 5) Collect Data 6) Form a Conclusion 7) Retest REMEMBER: Really Quiet Hippos Eat Dark Chocolate Research; Question; Hypothesis; Experiment; Take Data; Form Conclusions
  25. Scientific theory What is a theory? A well-tested explanation for a set of observations or experimental results Not the same as the way we use ‘theory’ in everyday language Are NEVER proven, but become stronger (or weaker) with new information Empirical evidence (by observation or experiment)
  26. Scientific Law is a statement that summarizes a pattern observed in nature Describes an observed pattern in nature without attempting to explain it (the explanation is given through a theory)
More Related