Repetition vs. Replication

Multiple Choice

What is the main purpose of replication in scientific experiments?

• To waste materials

• To check the accuracy of other scientists' work

• To finish experiments faster

• To use up leftover supplies

Multiple Select

Which of the following statements about repetition and replication are correct?

• Repetition is done by the same scientist.

• Replication is done by a different scientist.

• Repetition and replication mean the same thing.

• Replication is when an experiment is repeated by the same scientist.

Open Ended

Explain the difference between repetition and replication in scientific investigations.

Multiple Choice

What is the main difference between repetition and replication in scientific experiments?

• Repetition is repeating the same experiment by the same person, while replication is having someone else repeat the experiment.

• Repetition is using different materials, while replication is using the same materials.

• Repetition is for fun, while replication is for accuracy.

• Repetition is done in a group, while replication is done alone.

Multiple Choice

Steve 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. How could he use repetition to check his results?

• Calculate the density 2 more times

• Ask his friend Robert to calculate the density of the cubes

Multiple Choice

If Steve asked his friend Robert to calculate the densities, this would be an example of

• Repetition

• Replication

Multiple Choice

Billy 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. Is Billy using repetition or replication?

• Replication

• Repetition

Multiple Select

Why is replication and repetition important? Select all that are true:

• To make sure that the results are correct

• So others can see if the information is true

• To make sure that your hypothesis was right

• To make more money