chapter 2 2 n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Chapter 2.2 PowerPoint Presentation
Download Presentation
Chapter 2.2

Loading in 2 Seconds...

play fullscreen
1 / 18

Chapter 2.2 - PowerPoint PPT Presentation


  • 68 Views
  • Uploaded on

Chapter 2.2. Skills and Methods. Environmental Science 2012. Objectives. Describe the steps involved in conducting a scientific experiment. Bell Ringer. List steps that you know that make up the scientific method:. The Scientific Method.

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 'Chapter 2.2' - alfonso-mccarthy


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
chapter 2 2

Chapter 2.2

Skills and Methods

Environmental Science

2012

objectives
Objectives
  • Describe the steps involved in conducting a scientific experiment
bell ringer
Bell Ringer
  • List steps that you know that make up the scientific method:
the scientific method
The Scientific Method
  • The __________ method does not have to go in _______
  • The exact steps of the scientific method may vary, but all good scientific investigations have _____________ _____________
observing and questioning
Observing and Questioning
  • Observations
    • Can be made directly with the _________ or with the help of ___________
observing and questioning1
Observing and Questioning
  • Observations are followed by a question
  • The ____________ is based on something that was ____________________
  • Example: you observe that people who work in a particular building often become sick and you ask why
    • What is the observation?
    • What is the question?
    • Can you think of a hypothesis?
researching
Researching
  • An ______________ step in solving a scientific investigation is to find out what __________ have already ___________ about the topic
  • Others ______________ can save you steps or your ______________ may have already been proven or disproven
  • Do you think scientists repeat experiments on purpose?
hypothesizing
Hypothesizing
  • The next step is to develop a hypothesis
  • Hypothesis: _________ for an ____________
  • Example:
    • Observation: You notice that grass does not grow in certain parts of a lawn
    • Question: Why does grass not grow in this area?
    • Hypothesis:
      • ____________________________________________
  • Only ______ hypothesis must be chosen to investigate in an experiment
hypothesizing1
Hypothesizing
  • Observation: You notice that grass does not grow in certain parts of a lawn
  • Question: Why does grass not grow in this area?
  • Hypothesis: The area is too shady.
  • Now we can make a prediction:
    • _____________: states what the results of the experiment will be if the hypothesis is ___________
    • Prediction:
      • ____________________________________________
designing an experiment
Designing an Experiment
  • ___________ are used to test ____________
  • The experiment will either:
    • ______________ the hypothesis
    • Not support the hypothesis: can think of a new hypothesis and ____________
variables
Variables
  • ____________: any factor that affects the outcome of an experiment
    • An experiment should only test ______ variable at a time
    • Why?
  • Example: grass example
    • If we test the variables of the amount of water and sunlight we will not know which variable is actually affecting the grass
experimental and control groups
Experimental and Control Groups
  • _____________: has all of the factors that were there when the original observations were made
  • ____________________: has all of the factors that were there when the original observations were made and an additional variable
  • Grass example:
    • Hypothesis: the grass died because there was no water
    • ____________________: same conditions as original observations
    • __________________________: same conditions as original observations and the addition of water
experimental and control groups1
Experimental and Control Groups
  • Independent Variable: variable being _______
    • ______________
    • X-axis of graph
  • Dependent Variable: the variable being __________________
    • _______________________
    • Y-axis of graph
collecting organizing and analyzing data
Collecting, Organizing, and Analyzing Data
  • Scientists collect _____ on the results of the _____________ and the steps they took to conduct the experiment
  • There are many ways

to display data

    • __________
    • __________
collecting organizing and analyzing data1
Collecting, Organizing, and Analyzing Data
  • Once data has been ______________, must decide what the results mean normally through a written ________________ that comments on the _______________________
collecting organizing and analyzing data2
Collecting, Organizing, and Analyzing Data
  • The last step is to _________ their scientific work with others
  • Scientist’s can communicate through:
    • _________________________
    • Publish reports of conclusions in ___________________
    • _________________________
review
Review
  • Come up with the following for the observation that flowers sitting in the bathroom are not growing.
    • Question:
    • Hypothesis:
    • Prediction:
    • Design of experiment:
    • Experimental group:
    • Control group:
    • Independent variable:
    • Dependent variable: