Scientific Method and Principles

The video introduces physical science, explaining the nature of science, its categories, and the scientific method. It discusses how science investigates natural phenomena, the role of models, and the importance of variables in experiments. The video also differentiates between scientific theories and laws, and explores advanced topics and potential careers in science.

What is the primary focus of science?

• Exploring supernatural phenomena

• Investigating natural phenomena

• Evaluating art and literature

• Answering political questions

Which of the following is NOT a category of science?

• Earth science

• Physical science

• Political science

• Life science

How does science change over time?

• It changes based on public opinion

• It only changes when laws are broken

• It evolves with new discoveries

• It remains constant

What is the first step in the scientific method?

• Asking a question

• Conducting an experiment

• Communicating results

• Drawing conclusions

What should a scientist do if their conclusions do not align with their hypothesis?

• Stop the investigation

• Publish the incorrect results

• Form a new hypothesis

• Ignore the results

What is a constant in an experiment?

• The result of the experiment

• A factor that remains the same

• The hypothesis being tested

• A variable that changes

How can bias be reduced in scientific experiments?

• By ignoring unexpected results

• By conducting a blind experiment

• By choosing a preferred outcome

• By using a single researcher

What is the main difference between a scientific theory and a scientific law?

• A theory explains phenomena, a law predicts them

• A theory is a guess, a law is proven

• A theory becomes a law over time

• A theory predicts outcomes, a law explains them

Which of the following best describes a scientific law?

• A model of a natural phenomenon

• A hypothesis that has been tested

• A prediction of what will happen

• An explanation of why things happen

What is a null hypothesis?

• A hypothesis that predicts no effect

• A hypothesis that is always true

• A hypothesis that cannot be tested

• A hypothesis that explains a law