M8

• What is the purpose of experimental research?

  To establish a direct relationship or cause-and-effect between two variables.
• What is required for a variable to be considered in experimental research?

  At least one variable must be manipulated by the researcher.
• What are the specific expectations for this module on experimental and control set ups?

  1. Identify the experimental and control set ups in an experiment.

  2. Explain the difference between experimental and control set ups.

  3. Make an experiment highlighting experimental and control set ups.
• What are the three major characteristics of experimental research?

  Manipulation, control, and randomization.
• Why are the three characteristics of experimental research important?

  They ensure that the results are free from bias, sampling errors, and external influences.
• In what fields is experimental research useful?

  Natural sciences, education, business, and social sciences.
• What is the role of planning and setting up in conducting an experiment?

  It is vital for ensuring accurate and reliable results.
• What did Ken want to test in his bell pepper plant experiment?

  How different exposures to sunlight can affect the growth of bell peppers.
• How many pots were in each set of Ken's experiment?

  Each set contained 5 pots.
• What were the conditions of Set A in Ken's experiment?

  Set A was placed inside a shaded room with low sunlight exposure.
• What were the conditions of Set B in Ken's experiment?


  Set B was placed in an open space with high sunlight exposure.
• What was the outcome of Ken's experiment after 2 weeks?


  The plants in Set B grew significantly taller than those in Set A.
• What is a set up in an experiment?

  A set up is where the experimental procedure is performed to test the effect of a variable.
• What is a control set up?

  A control set up is where all variables are controlled and there is no independent variable present.
• Why is a control set up important in an experiment?

  It minimizes changes in all other variables except the one being tested.
• What is an experimental set up?


  An experimental set up is similar to the control set up but includes the independent variable.
• What is the difference between a control group and an experimental group?

  The control group does not receive treatment, while the experimental group does.
• In Ken's experiment, what were the control and experimental groups?

  The control group was Set A (shaded room), and the experimental group was Set B (open space).
• What is the purpose of experimental and control set ups?

  • To explain kinds of causation.
  • To allow researchers to have stronger control over variables.
  • To obtain desired results and build a foundation for further research.
• What did Pablo want to confirm in his slime experiment?

  Whether vinegar can help get rid of the green slime mold.
• What were the two areas Pablo marked in his experiment?

  Area A and Area B.
• What did Pablo spray on Area A and Area B?

  Area A was sprayed with water and vinegar, while Area B was sprayed with water only.
• What was the outcome of Pablo's experiment after 3 days?

  There was no change in the appearance of the green slime mold on either side of the lawn.
• What is the independent variable in Pablo's experiment?

  The independent variable is the vinegar treatment.
• What happens if there are too many independent variables in an experiment set up?

  It can lead to confusion and make it difficult to determine the cause of the observed effects.
• What are the key components of Pablo's slime experiment?

  • Area A: Sprayed with water and vinegar.
  • Area B: Sprayed with water only.
  • Independent variable: Vinegar treatment.
  • Dependent variable: Appearance of green slime mold.