Brain Pop: Scientific Method

What's the difference between a hypothesis and a theory?

• "Theory" is another word for "fact;" "hypothesis" is another word for "guess."

• Hypotheses can't be proven; theories can.

• Theories have been confirmed through tests; hypotheses haven't.

• Theories contain many hypotheses; a hypothesis contains only one theory.

Place the following steps in sequence: A) Recognizing a problem; B) Testing a hypothesis; C) Drawing inferences

• A, C, B

• A, B, C

• B, C, A

• C, B, A

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In the phrase, "The scientific method is an analytic process for determining why things happen," what's the best synonym for "analytic?"

• Probable

• Amazing

• Incoherent

• Logical

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What must you do before you make a hypothesis?

• Run an experiment

• Make observations

• Form a theory

• Draw conclusions

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If you were running an experiment to determine the temperature at which beans sprout the fastest, what would be the variable?

• The number of beans you plant.

• The height of the sprouts you grow.

• The amount of water you give the beans.

• The temperature that each bean is kept.

You should run an experiment several times to make sure your results are consistent. In the preceding phrase, what does "consistent" mean?

• Obvious

• Perfect

• Unchanging

• Testable

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What might cause a theory to change over time?

• New laws passed by the government

• New, but untestable ideas

• Changes in public opinion

• The discovery of new evidence

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"Covid-19 is a virus that travels through the air'" is one example of a theory. From what you know about the scientific method, what can you conclude about this biological theory?

• It's been tested many times.

• Scientists don't need to test it any more.

• No one is allowed to test whether it is true or not.

• There is very little evidence to support it.

Which of the following is a testable hypothesis?

• Roses are more beautiful than violets.

• A plant needs at least five hours of sunlight per day to grow.

• Ice cream is delicious!

• Humans will one day land on Mars.

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NGSS.HS-PS1-2

What happens if you test a hypothesis multiple times and the data doesn't support your prediction?

• Change the data to support your prediction.

• Run the experiment again until you get the results that you are looking for.

• Conclude that your hypothesis can not be proven.

• Re-think your hypothesis.

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