the nature of science
Download
Skip this Video
Download Presentation
The Nature of Science

Loading in 2 Seconds...

play fullscreen
1 / 26

The Nature of Science - PowerPoint PPT Presentation


  • 495 Views
  • Uploaded on

The Nature of Science The Nature of Science Science - an attempt to discover order in nature and to use that knowledge to make predictions about what should happen in nature The Nature of Science Primary goal of science?

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'The Nature of Science' - jaden


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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
the nature of science2
The Nature of Science
  • Science - an attempt to discover order in nature and to use that knowledge to make predictions about what should happen in nature
the nature of science3
The Nature of Science
  • Primary goal of science?
    • To discover order in nature and to use that knowledge to make predictions about what should happen in nature
the nature of science4
The Nature of Science
  • The Scientific Process
    • Involves trying to answer a set of questions:
      • What is the question about nature to be answered?
      • What relevant facts and data are already known?
the nature of science5
The Nature of Science
  • The Scientific Process
    • Involves trying to answer a set of questions:
      • What new data should be collected and how?
      • After data are collected, can they be used to formulate a scientific law or theory?
the nature of science6
The Nature of Science
  • The Scientific Process
    • Involves trying to answer a set of questions:
      • How can a hypothesis be invented that explains the data and predicts new facts? Is this the most reasonable hypothesis?
the nature of science7
The Nature of Science
  • The Scientific Process
    • Involves trying to answer a set of questions:
      • What new experiments can be done to test the hypothesis (and modify it if necessary) so it can become a scientific theory?
the nature of science8
The Nature of Science
  • The Scientific Process
    • Steps:
      • State the question we wish to answer
      • Collect data
        • Qualitative Data - descriptive observations
        • Quantitative Data - measurements
the nature of science9
The Nature of Science
  • The Scientific Process
    • Steps:
      • Formulate hypotheses
        • Hypothesis - a proposition that is put forth as an explanation for, or prediction of, an observation or a phenomenon
the nature of science10
The Nature of Science
  • The Scientific Process
    • Steps:
      • Test hypotheses through experimentation
        • An experiment evaluates alternative hypotheses
        • Experiments must be reproducible through controlled experiments
the nature of science11
The Nature of Science
  • The Scientific Process
    • Steps:
      • Test hypotheses through experimentation
        • Controlled Experiment
          • Experimental Group - a variable (e.g. temperature, concentration, etc.) is changed in a known way
          • Control Group - the chosen variable is not changed
the nature of science12
The Nature of Science
  • The Scientific Process
    • Steps:
      • Test hypotheses through experimentation
        • Controlled Experiment
          • All components of each group are as identical as possible and experience the same conditions, except for the variable being manipulated in the experimental group
the nature of science13
The Nature of Science
  • The Scientific Process
    • Steps:
      • Test hypotheses through experimentation
        • Controlled Experiment
          • Any differences between the two groups should result from the variable that was manipulated in the experimental group
the nature of science14
The Nature of Science
  • The Scientific Process
    • Steps:
      • Test hypotheses through experimentation
        • The best hypothesis is the one that holds under a variety of experiments and which makes predictions that can be used to test the validity of the hypothesis
the nature of science15
The Nature of Science
  • The Scientific Process
    • Steps:
      • Test hypotheses through experimentation
        • If the results of the experiment do not support the hypothesis, then revise the hypothesis
the nature of science16
The Nature of Science
  • The Scientific Process
    • Steps:
      • Test hypotheses through experimentation
        • Hypotheses can be tested using a model - an approximate representation or simulation of a system being studied
the nature of science17
The Nature of Science
  • The Scientific Process
    • Steps:
      • Test hypotheses through experimentation
        • Types of models
          • Conceptual
          • Physical
          • Graphical
          • Mathematical
the nature of science18
The Nature of Science
  • The Scientific Process
    • Steps:
      • After extensive experimentation, formulate a scientific law
      • Scientific Law - a description of what scientists find happening in nature over and over in the same way, without known exception
the nature of science19
The Nature of Science
  • The Scientific Process
    • Steps
      • A scientific law only summarizes a relationship; it does not explain the relationship
        • Boyle’s Law: V = k/P
        • Law of Conservation of Matter
the nature of science20
The Nature of Science
  • The Scientific Process
    • Steps:
      • If many experiments by different scientists support a particular hypothesis, then the hypothesis becomes a scientific theory
the nature of science21
The Nature of Science
  • The Scientific Process
    • Scientific Theory - a well-tested and widely accepted scientific hypothesis
the nature of science22
The Nature of Science
  • The Scientific Process
    • A scientific theory:
      • Represents the best explanation for the phenomenon based on current knowledge
      • Is tested through continuous experimentation and perhaps rejected or modified
the nature of science23
The Nature of Science
  • The Scientific Process
    • A scientific theory:
      • Often becomes more accurate as scientists gain more information
      • Is useful for its predictive value
the nature of science24
The Nature of Science
  • Are Scientific Laws and Theories True?
    • Scientists:
      • Can disprove things, but can never prove anything
      • Are more concerned with how useful a theory or law is in explaining and predicting what happens in nature
the nature of science25
The Nature of Science
  • Are Scientists Always Objective and Ethical?

NO

the nature of science26
The Nature of Science
  • Is Science Good or Bad?

NEITHER

ad