Scientific Method and Experimental Design

The video tutorial explains how to create testable questions using the scientific method. It covers the importance of forming a hypothesis, designing experiments, and understanding variables. The tutorial provides examples of testable questions and emphasizes the role of controls in experiments. It also guides viewers on converting general questions into testable ones, ensuring clarity and simplicity in scientific investigations.

What is the first step in the scientific method?

• Forming a hypothesis

• Drawing conclusions

• Designing an experiment

• Asking a testable question

Which of the following is a correct format for a testable question?

• What makes the sky blue?

• Does changing the color of light affect plant growth?

• How does the weather affect mood?

• Why do plants grow?

What is a variable in the context of scientific experiments?

• A factor that can change

• A constant factor

• A hypothesis

• A conclusion

In an experiment, what is the independent variable?

• The variable that is measured

• The variable that is not used

• The variable that is kept constant

• The variable that is changed by the scientist

What is the dependent variable in an experiment?

• The variable that is changed by the scientist

• The variable that is measured

• The variable that is kept constant

• The variable that is not used

How can a general question be turned into a testable question?

• By making it more complex

• By using a hypothesis

• By adding more variables

• By identifying a cause and effect relationship

What is the role of controls in an experiment?

• To change the outcome

• To keep certain factors constant

• To measure the dependent variable

• To alter the independent variable

Which of the following is an example of a testable question?

• How does the type of paper affect the distance a paper airplane flies?

• How do plants grow?

• Why do birds sing?

• What makes the ocean blue?

Why is it important to keep all other factors constant in an experiment?

• To ensure that the results are due to the independent variable

• To make the experiment easier

• To ensure the experiment is interesting

• To allow for multiple independent variables

What should be done if the conclusion of an experiment is unclear?

• Change the hypothesis

• Ignore the results

• Change the dependent variable

• Run another experiment or consult another scientist