Scientific Method

Imagine this: Ava, Sophia, and Aiden are having a fun science day! Ava comes up with a cool experiment. She makes five paper helicopters, each with different wing lengths. With a big smile, she drops them from a height of two meters, one by one, for five trials each. Everyone is excited as they record the amount of time it takes for each helicopter to fall to the ground. Can you tell us what the independent variable in Ava's experiment is?

• The way Ava drops the helicopters

• The time it takes for the helicopters to hit the floor

• The wing length of the helicopters

• The height from which Ava drops the helicopters

Tags

NGSS.MS-PS2-2

Conclusions based on an experiment are most likely to be accepted when

• they are consistent with experimental data and observations

•  they are derived from investigations having many experimental variables

•  scientists agree that only one hypothesis has been tested

•  hypotheses are based on one experimental design

Tags

NGSS.MS-LS2-4

NGSS.MS-PS1-2

In order to be accepted, a scientific theory must be

•  widely tested and supported by extensive data

•  based on the results of a single experiment

•  controversial and cause debate

•  in line with all previous historical ideas

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-2

In an appropriately designed experiment, a scientist is able to test the effect of

•  a single variable

•  multiple variables

•  the hypothesis

•  scientific observations

Tags

NGSS.MS-PS1-2

Which statement best expresses a basic scientific assumption?

• Interpretation of experimental results has provided explanations for all natural phenomena.

• If a conclusion is valid, similar investigations by other scientists should result in the same conclusion.

• For any conclusion to be valid, the design of the experiment requires that only two groups be compared.

• After a scientist formulates a conclusion based on an experiment, no further investigation is necessary.

Tags

NGSS.HS-PS1-2

Which of these contains steps in the right order?

• Ask a question, state your hypothesis, research, experiment, analyze, make a conclusion

• State your hypothesis, ask a question, research, experiment, analyze, make a conclusion

• Ask a question, research, state your hypothesis, experiment, analyze, make a conclusion

• State your hypothesis, ask a question, research, make a conclusion, experiment, analyze

Tags

NGSS.MS-PS2-2

Performing a test or experiment allows you to test your ___________.

• draw conclusions

• hypothesis

• senses

• battery

Tags

NGSS.MS-LS2-1

What is the first step in the scientific method?

• Formulating a hypothesis

• Conducting an experiment

• Making an observation

• Analyzing data

In a scientific experiment, what is the purpose of a control group?

• To provide a standard for comparison

• To test multiple variables

• To ensure the experiment is valid

• To increase the sample size

Which of the following best describes a hypothesis?

• A proven fact

• An educated guess

• A random guess

• A scientific law

Tags

NGSS.MS-PS1-2