REVIEW: Scientific Method

What is the purpose of the scientific method?

• To create a consistent process to get reliable data

• To research new information

• To practice safety

• To become a scientist

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Which is a good example of a hypothesis for the following scientific question, "Does playing violent video games lead to higher blood pressure?"

• Playing violent video games gives people higher blood pressure.

• If you have higher blood pressure, then you play violent video games.

• If you play violent video games you will have higher blood pressure.

• If you play violent video games, then you will have higher blood pressure.

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Why is the following considered a bad hypothesis? "If your plants grew taller, then they were given fertilizer."

• It doesn't have "if" and "then"

• The prediction is wrong

• The independent and dependent variable are in the wrong order

• This is a good hypothesis

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Jennifer wants to know if students do better on their homework if they listen to classical music or hip hop music. What is the independent variable in this experiment?

• Students' grades on homework

• The age of the students

• The volume of the music

• The type of music

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A qualitative observation is ________.

• Describing qualities and characteristics

• A guess you make using an observation

• Numbers and labels

• What is kept the same in an experiment

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Which best describes the act of using senses or tools to gather information?

• creating a hypothesis

• making an observation

• summarizing the results

• recording the measurements

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Which best describes the purpose of a control sample?

• to compare its results to those of a well-known scientist

• to have more qualitative data to analyze at the end of the experiment

• to compare its results to those with the experimental sample

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What should an experimenter do after analyzing data?

• carry out the experiment

• draw conclusions

• observe and infer

• identify the problem

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When using inductive reasoning, one goes from ​ ​ (a)   observations to ​ (b)   explanations.

• specific
• general

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Put the steps involved in hypothesis testing in the correct order.

• Analyze whether results of experiment support or refute hypothesis

• Design experiment to test hypothesis

• Share your work so that other scientists can review your work

• Predict what will happen in experiment if hypothesis is true

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