Repetition vs Replication in Science Experiments

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.

When a another scientist does someone's experiment to see if the results are valid?

• repetition

• replication

• experimental method

• controlled variable

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.

Josue goes to Silver River each week for 4 weeks and collects 5 samples of water to test the pH.

• repetition

• replication

An environmental group contacts Nina to get her procedures so that they can check her results.

• repetition

• replication

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Haylena baked chocolate chip cookies that wound up looking like muffins. She asked Lunelka to use the same directions and see if her cookies also look like muffins.

• repetition

• replication

Scientists repeat scientific studies to validate results

• True

• False

What happens if the results of a scientist's experiment are NOT similar to the results gathered by other scientists doing the same experiment at a later date?

• The results of the experiment are changed by the scientists.

• The results of the experiment are published in scientific journals.

• The results of the experiment are questioned by the other scientists.

• The results of the experiment are accepted by the scientific community.

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Reggie and Marissa decide to measure the number of stairs a spring toy can travel down. Reggie tries first. Before he tells Marissa what he measured, however, he tries the experiment three different times. When Marissa asks about the result, he tells her the average of his three trials, and the range of his results, from the lowest to the highest value. What would be the most likely scientific reason for Reggie to repeat the experiment so many times?

• He needed to obtain identical results.

• He needed to obtain the result he expected.

• He needed to see how consistent or inconsistent his results were.

• He needed to see how the fundamental principle he was studying changed.

Having an experiment repeated by others is called ?

• Repetition

• Replication

• Experiment