The Question
  • A Scientific Question can be answered by 
   gathering scientific evidence (with 
   measurements / observations)  
   – testable & measurable
   –Do not use term – better?  How is that measured?
  • An example of a scientific question is “Which 
   freezes faster—fresh water or salt water?”
             RESEARCH
           “Review of Literature”
 Before you can begin your investigation, you must find out 
 all the information you can that is known about your topic.
 Use 
 •
 textbooks and science books
 •
 Science journals (usually high level)
 •
 Internet resources --  (.edu or .gov)
  •
   You must pay attention to the source 
    •
    Is the source bias?
    •
    Is the source accurate?
        The Hypothesis
 • Developing a hypothesis -  give possible outcomes 
  for the tested variables. It is based on research & 
  previous knowledge and observations.  
 • MUST be If…Then.
 • The “If” states what variables are being tested.
 • The “then” part of the hypothesis must be 
  collectable data.
 •  An example of a hypothesis is “If fresh water and 
  salt water are frozen, then the salt water will take 
  longer to freeze.”
         Rationale
  • Explain why the hypothesis is correct based on 
   the review of the literature.  
  Adding salt to water lowers the freezing point of 
   water.  This will cause salt water to take longer 
   to freeze.