Repetition and Replication

Anthony was given a set of 5 metal cubes. He calculated the densities of each to determine the type of metal in each. The densities were really close to each other, so he asked his friend Robert to do the same experiment and see if he gets the same results.

• repetition

• replication

Ryan is testing golf balls. He drops three different brands of balls from 40 cm and measures how high they bounce. He drops each ball 10 times.

• repetition

• replication

Tags

NGSS.MS-ETS1-3

What is the best way to make sure your data is accurate in an experiment?

• Do research

• Do your experiment multiple times

• Make a prediction

• Form a conclusion

Which of the following is an experiment being copied in a different lab setting for data validation?

• Control

• Hypothesis

• Replication

• Repetition

Which of the following is an experiment that is performed over and over again in the form of trials?

• Control

• Hypothesis

• Relication

• Repitition

Scientists frequently repeat the experiments of others scientists. Why is this important in science?

• Scientists often ask each other for help in performing experiments.

• Replication of experiments helps to confirm and verify results.

• Scientists frequently perform other scientists’ experiments in order to practice their technique.

• Repeating experiments is an effective way to make sure a laboratory is in optimal condition.

Cara read an article on why repetition and replication are so important, but she did not understand the difference between them. Which of the following best explains the two terms?

• Repetition is when a scientist repeats an experiment; replication is when a scientist conducts an experiment on genetic material.

• Repetition is when a scientist does the same experiment a number of times; replication is when other scientists reproduce a scientist’s experiment.

• Repetition is when a scientist publishes in more than one scientific periodical; replication is when another scientist reproduces another scientist’s results.

• Repetition is when a scientist commits an error in an experiment the first time and must repeat it; replication is when a scientist repeats an experiment to make sure it is valid.

The BEST reason another scientist is unable to replicate an experiment...

• They did it wrong.

• They had variables that were not controlled.

• They didn't follow the procedure.

• They measured wrong.

Tags

NGSS.HS-PS1-3

Marcia did an experiment to find out whether tulips grow faster under fluorescent lighting or incandescent lighting. Under flourescent lighting, Marcia's plants grew 1.5 cm taller in two months. She gave her notes to Alex, who did the same experiments with similar results. Which term describes Alex's experiment?

• plagiarism

• replication

• pseudo science

• repitition

In a scientific experiment, what is the term used when the same experiment is conducted by different scientists to verify the results?

• Repetition

• Replication

• Observation

• Hypothesis