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Questions and Answers
What is the primary component of a scientific investigation?
What is the primary component of a scientific investigation?
What is the purpose of a hypothesis in an experiment?
What is the purpose of a hypothesis in an experiment?
What is the independent variable in an experiment?
What is the independent variable in an experiment?
What is the purpose of a fair test in an experiment?
What is the purpose of a fair test in an experiment?
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What is the focus of observation in an experiment?
What is the focus of observation in an experiment?
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What is the purpose of choosing appropriate devices and units for measurement in an experiment?
What is the purpose of choosing appropriate devices and units for measurement in an experiment?
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What is the purpose of recording and reporting data in an experiment?
What is the purpose of recording and reporting data in an experiment?
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What type of graphical representation is used to interpret data in an experiment?
What type of graphical representation is used to interpret data in an experiment?
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Study Notes
Scientific Investigation
- A scientific investigation is a systematic approach to answer questions about the world around us.
- The number one component is to formulate a specific question or problem to be tested.
Formulating a Hypothesis
- A hypothesis is a statement that gives a tentative answer or solution to the question.
- It is the expected outcome in an experiment.
Selecting and Justifying a Procedure
- This step involves formulating procedures for the actual experiment.
- Procedure examples:
- Write hypothesis in a testable form.
- Identify the variables that need to be controlled for a fair test.
- Identify the dependent and independent variables.
- Prepare all the materials needed.
- Make experimental and control setup.
Identifying Variables
- Identify the dependent and independent variables in the investigation.
- The independent variable is the variable that stands alone and cannot be affected by the other variable.
- The dependent variable is the variable that depends on the independent variable.
Carrying Out the Procedure
- This step involves performing the experiment, including a fair test.
- A fair test is making sure that in an experiment, one factor or condition (the independent variable) affects another (the dependent variable) by keeping all other conditions constant.
- Control variables are factors that are kept the same in both the experimental and control setups.
Making Observations
- The focus of observation is the dependent variable.
- In this case, the observation is the plant growth.
Making Measurements
- Choose appropriate devices and units for measurement.
- In this experiment, the device is a tape measure or ruler, and the unit is centimeter.
Recording and Reporting
- Record the measurements of plant growth in a certain period of time.
- Use charts or graphs to record and report the data.
Interpreting Data
- Use graphical representation such as bar graphs, line graphs, and pie charts to interpret data.
- Write the interpretation of data in the chosen graph.
Drawing a Conclusion
- Draw a conclusion from the results obtained, including a statement to support or reject the hypothesis.
- The conclusion should be supported by citing studies and experiments with similar results.
Scientific Investigation
- A systematic approach to answer questions about the world around us, with a specific question or problem to be tested.
Formulating a Hypothesis
- A statement that gives a tentative answer or solution to the question, expected outcome in an experiment.
Selecting and Justifying a Procedure
- Formulating procedures for the actual experiment, including:
- Writing hypothesis in a testable form.
- Identifying variables to be controlled for a fair test.
- Identifying dependent and independent variables.
- Preparing materials needed.
- Setting up experimental and control setups.
Identifying Variables
- Identifying dependent and independent variables:
- Independent variable: stands alone and cannot be affected by the other variable.
- Dependent variable: depends on the independent variable.
Carrying Out the Procedure
- Performing the experiment, including a fair test, by:
- Keeping all other conditions constant.
- Identifying control variables: factors kept the same in both experimental and control setups.
Making Observations
- Focusing on the dependent variable, in this case, plant growth.
Making Measurements
- Choosing appropriate devices and units for measurement, such as:
- Tape measure or ruler.
- Units: centimeters.
Recording and Reporting
- Recording measurements of plant growth in a certain period of time, using:
- Charts or graphs.
- Recording and reporting data.
Interpreting Data
- Using graphical representation, such as:
- Bar graphs.
- Line graphs.
- Pie charts.
- Writing interpretation of data in the chosen graph.
Drawing a Conclusion
- Drawing a conclusion from the results, including:
- Statement to support or reject the hypothesis.
- Citing studies and experiments with similar results.
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Description
Learn about the scientific investigation process, including formulating a question, hypothesis, and selecting a procedure to conduct an experiment.
