Scientific Method (5th Period)

12 Questions | Total Attempts: 114

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Scientific Method (5th Period)

In this quiz, you will be granted an opportunity to demonstrate your understanding of the scientific inquiry.


Questions and Answers
  • 1. 
    You are the head of the research division of the Leafy Lettuce Company. Your company is experimenting with growing lettuce using hydroponic technology.  Hydroponic technology involves growing plants in containers of growth solution  in a greenhouse. No soil is used. The growth solution that the company uses contains water, nitrogen, and phosphorus. The company wants to know if adding iron to this formula will improve lettuce growth. What would the INDEPENDENT VARIABLE be in the experiment?
    • A. 

      Lettuce growth

    • B. 

      Soil

    • C. 

      The growth solution

    • D. 

      Water

    • E. 

      Hydroponic technology

  • 2. 
    In scientific research, the DEPENDENT VARIABLE is a factor that is measured to learn the effect of one or more independent variables.
    • A. 

      True

    • B. 

      False

  • 3. 
    In an experiment, you water three sunflower plants with salt water. Each plant receives a different concentration of salt water solution. A fourth plant receives pure water. After a two week period, the height of each plant is measured. In this experiment, the plant height is which of the following?
    • A. 

      The control

    • B. 

      The DEPENDENT variable

    • C. 

      The INDEPENDENT variable

    • D. 

      Qualitative data

  • 4. 
    The following could be an example of a hypothesis: "If the outdoor temperature decreases to 32 degrees Farenheit or colder (at standard pressure), then the lake will begin to freeze because water freezes at 32 degrees Farenheit."
    • A. 

      TRUE

    • B. 

      FALSE

  • 5. 
    There will be a statistically significant difference in graduation rates of at-risk high-school seniors who participate in an intensive study program as opposed to at-risk high-school seniors who do not participate in the intensive study program." (LaFountain & Bartos, 2002, p. 57) What is the DEPENDENT variable?
    • A. 

      Graduation rates

    • B. 

      At-risk-high-school seniors

    • C. 

      Participation in the intensive study program

    • D. 

      At-risk-high-school juniors

  • 6. 
    There will be a statistically significant difference in graduation rates of at-risk high-school seniors who participate in an intensive study program as opposed to at-risk high-school seniors who do not participate in the intensive study program." (LaFountain & Bartos, 2002, p. 57) What is the INDEPENDENT variable?
    • A. 

      Graduation rates

    • B. 

      At-risk-high-school seniors

    • C. 

      Participation in the intensive study program

    • D. 

      At-risk-high-school juniors

  • 7. 
    "A director of residential living on a large university campus is concerned about the large turnover rate in resident assistants. In recent years many resident assistants have left their positions before completing even 1 year in their assignments. The director wants to identify the factors that predict commitment as a resident assistant (defined as continuing in the position a minimum of 2 years). The director decides to assess knowledge of the position, attitude toward residential policies, and ability to handle conflicts as predictors for commitment to the position." (LaFountain & Bartos, 2002, p. 8). What is the INDEPENDENT VARIABLE?
    • A. 

      Continuing in the position of resident assistant for at least 2 years

    • B. 

      Knowledge of the position, attitude toward residential policies, and the ability to handle conflicts

    • C. 

      The large turnover rate

    • D. 

      The director of residential living

  • 8. 
    According to the graph, the value of Sarah's car INCREASED between 2001 and 2007.
    • A. 

      True

    • B. 

      False

  • 9. 
    Tyrosine concentration ([Tyrsonine] mM) is shown as the DEPENDENT VARIABLE in this graph.
    • A. 

      True

    • B. 

      False

  • 10. 
    The diagram below represents the change in a sprouting onion bulb when sunlight is present and when sunlight is no longer available. A student researcher hypothesized, "if the leaves of an onion bulb are removed from light for an extended period of time, then the leaves will wilt, or wither, because the leaves require sunlight to remain healthy." The above diagram, which models the results of his experiment, SUPPORTS this hypothesis.
    • A. 

      True

    • B. 

      False

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