Le Lesson 1.3 Hw

4 Questions | Total Attempts: 299

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Le Lesson 1.3 Hw

These questions deal with the SCIENTIFIC METHOD. Answer accordingly. REMEMBER: You must score at least a 70 PERIOD # followed by FIRST & LAST NAME (ex: 4 JOHN SMITH)


Questions and Answers
  • 1. 
    The development of an experimental research plan should not include a 
    • A. 

      List of safety precautions for the experiment

    • B. 

      List of equipment needed for conducting the experiment

    • C. 

      Procedure for the use of technologies needed for the experiment

    • D. 

      Conclusion based on data expected to be collected in the experiment

  • 2. 
    A mineral supplement designed to prevent the flu was given to two groups of people during a scientific study. Dosages of the supplement were measured in milligrams per day, as shown in the table below.  After 10 weeks, neither group reported a case of the flu. Which procedure would have made the outcome of this study more valid? 
    • A. 

      Test only one group with 200 mg of the supplement

    • B. 

      Test the supplement on both groups for 5 weeks instead of 10 weeks

    • C. 

      Test a third group that receives 150 mg of the supplement

    • D. 

      Test a third group that does not receive the supplement

  • 3. 
    A biologist formulates a hypothesis, performs experiments to test his hypothesis, makes careful observations, and keeps accurate records of his findings. In order to complete this process, the biologist should 
    • A. 

      Adjust the data to support the hypothesis

    • B. 

      Eliminate data that do not support the hypothesis

    • C. 

      Write a research paper explaining his theories before performing his experiments, in order to gain funding sources

    • D. 

      Evaluate the findings and, if necessary, alter the hypothesis based on his findings, and test the new hypothesis

  • 4. 
    The bar graph below shows the height of a plant at the end of each week of a five-week growth period.  Which statement represents a valid conclusion based on the information in the graph? 
    • A. 

      The plant was given water during the first three weeks, only.

    • B. 

      The plant will grow faster during the sixth week than it did during the fifth week.

    • C. 

      The plant grew fastest during the first three weeks, and then it grew slower.

    • D. 

      The plant grew slowest during the first three weeks, and then it grew faster.