Exploring the Scientific Method

The video tutorial covers the basics of experimental design, focusing on forming a hypothesis, identifying constants, and distinguishing between independent and dependent variables. The experiment involves testing plant growth under different colored lights. The teacher explains the importance of keeping constants like light exposure and water consistent, while changing the independent variable, which is the light color. The results show varying plant growth, highlighting the dependent variable. A vocabulary review concludes the session.

What is the first step before starting any experiment?

• Collecting data

• Formulating a hypothesis

• Analyzing results

• Setting up equipment

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Why is it important for a hypothesis to make sense?

• It helps in getting accurate results

• It ensures the experiment is interesting

• It ensures the hypothesis can be tested

• It makes the experiment easier to conduct

What is an independent variable?

• A variable that is measured

• A variable that is not used in the experiment

• A variable that is changed on purpose

• A variable that is kept the same

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NGSS.MS-PS2-2

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Why should all plants receive the same amount of light in an experiment?

• To ensure the light color is the only variable affecting growth

• To save electricity

• To make the experiment easier to conduct

• To ensure they grow at the same rate

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Which of the following is NOT a constant in the plant growth experiment?

• Amount of water

• Type of plant

• Color of light

• Placement of plants

What color light was used as the independent variable in the experiment?

• All of the above

• Red

• Yellow

• Blue

What was the result for the plant under the blue light?

• It shrank

• It grew a lot

• It grew the largest

• It stayed about the same

Tags

NGSS.MS-LS1-5

Which plant showed the most growth?

• The plant under yellow light

• All plants grew equally

• The plant under red light

• The plant under blue light

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NGSS.MS-LS1-5

What is a dependent variable?

• A variable that is not used in the experiment

• A variable that is measured as the outcome

• A variable that is changed on purpose

• A variable that is kept the same

Tags

NGSS.MS-PS3-4

What is the role of constants in an experiment?

• To keep the experiment fair

• To measure the results

• To change the outcome

• To manipulate the variables