Testing Your Hypothesis with Controlled Experiments

The video by Katrina Sheret explains the scientific method, focusing on how to create a controlled experiment. It covers the steps of forming a hypothesis, testing it, and analyzing results. The video uses a race analogy to explain variables, including independent, dependent, and control variables. It provides a detailed example of designing a controlled experiment with bean plants, highlighting the importance of keeping conditions constant except for one variable. The video concludes with a review of key concepts and emphasizes the importance of identifying variables before conducting experiments.

What is the first step in the scientific method?

• Analyzing data

• Forming a hypothesis

• Conducting an experiment

• Asking a question

In a controlled experiment, what is kept constant?

• None of the variables

• All variables except one

• The dependent variable

• The independent variable

What does the term 'variable' mean?

• Something that is kept the same

• Something that can change

• A type of hypothesis

• A type of data

Which type of variable is purposefully changed in an experiment?

• Constant variable

• Independent variable

• Control variable

• Dependent variable

In the race example, what was the dependent variable?

• The runner

• The starting point

• The weather

• The runner's time

What should you ask to identify the dependent variable?

• What am I purposefully changing?

• What is going to respond to the change?

• What is kept constant?

• What is the hypothesis?

In the bean plant experiment, what was the independent variable?

• The height of the bean plant

• The type of soil

• The amount of sunlight

• The amount of water

Why is it important to keep control variables constant?

• To ensure the experiment is fair

• To change the outcome

• To make the experiment more complex

• To test multiple variables at once

How many independent variables should there be in a controlled experiment?

• As many as needed

• Three

• Two

• One

What is the purpose of a hypothesis in an experiment?

• To collect data

• To analyze results

• To make a prediction

• To share conclusions