Designing An Experiment Part 2

10 Questions | Total Attempts: 124

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Designing An Experiment Part 2

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Questions and Answers
  • 1. 
    To be sure that you have good operational definitions on terms in your experiment's purpose and/or hypothesis, what is a good question to make sure you can answer "yes" to?
    • A. 

      "Will this definition tell another person what to observe and/or how to measure?"

    • B. 

      "Will this definition tell another person what the outcome of the experiment should be?"

    • C. 

      "Is this definition supported by our data?'

    • D. 

      "Would this definition be found in my Personal Glossary?"

  • 2. 
    Which word needs an operational definition in the following hypothesis:  If babies eat Brand X baby food, then the babies will be healthier.
    • A. 

      Brand X

    • B. 

      Babies

    • C. 

      Healthier

    • D. 

      All of these

  • 3. 
    When talking about healthy plants, one might operationally define a "healthy plant" as
    • A. 

      A plant that produces at least the average number of flowers for that plant type

    • B. 

      A plant that produces at least the average number of leaves for that plant type

    • C. 

      A plant that grows to at least the average height for that plant type

    • D. 

      Any one of these could be used to operationally define a "healthy plant"

  • 4. 
    Why must you use a control when setting up an experiment?
    • A. 

      To have something to compare your experimental group to in order to determine if there has been a change

    • B. 

      To determine whether the independent variable had an effect on the outcome

    • C. 

      To determine whether the dependent variable had an effect on the outcome

    • D. 

      All of the above

    • E. 

      Only the first two options are correct

  • 5. 
    We planted 6 seedlings in the same type of soil, made sure they all got the same amount of sunlight and were grown at the same temperature.  Every day we watered the seedlings.  All received the same amount of water, but the experimental group of three seedlings received water that was polluted by adding 3 drops of detergent.  Once a week for four weeks, we measured the height of the bean seedlings with a centimeter ruler.  Which of the following is correct?
    • A. 

      The seedlings were the independent variable and the sunlight was the dependent variable

    • B. 

      The amount of water was the independent variable and the detergent was the dependent variable

    • C. 

      The detergent was the independent variable and the height of the seedlings was the dependent variable.

    • D. 

      The soil was the dependent variable and the height of the seedlings was the dependent variable.

  • 6. 
    What is the purpose of a critique?
    • A. 

      To reflect on whether your experiment was done carefully and whether the results can be trusted

    • B. 

      To consider how the experiment could be improved to be more trustworthy

    • C. 

      To learn from mistakes so that future experiments might be more exact

    • D. 

      All of the above

  • 7. 
    What does  "QFS" stand for?
    • A. 

      Quest for success

    • B. 

      Quit forgetting stuff!

    • C. 

      Question for Stanley

    • D. 

      Question for further Study

  • 8. 
    What is the independent variable for this experiment?
    • A. 

      Type of flower

    • B. 

      Different food coloring

    • C. 

      Amount of water

    • D. 

      Size of the glass

  • 9. 
    What would NOT be a constant in this experiment?
    • A. 

      Type of flower

    • B. 

      The color of the water

    • C. 

      Amount of water

    • D. 

      Time the flower was left in the water

  • 10. 
    Which of the following would make a good scientific question?
    • A. 

      Do you like learning about plants?

    • B. 

      Does the number of hours of sunlight affect a WFP's leaf color?

    • C. 

      Is honesty the best policy?

    • D. 

      Why do bad things happen to good people?

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