Repetition and Replication

What does "repetition" mean in science?

• When the SAME scientist conducts the same experiment multiple times

• When different scientists conduct the same experiment

• When a scientist changes the experiment each time

• When an experiment is only done once

Tags

NGSS.MS-PS2-2

Which of the following is an example of repetition?

• Pikachu conducts his own experiment multiple times

• Pikachu asks his friends to do the experiment

• Pikachu changes the experiment every time

• Pikachu only thinks about the experiment

Tags

NGSS.MS-ETS1-4

Why might a scientist use repetition in an experiment?

• To make sure the results are consistent and reliable

• To make the experiment more complicated

• To involve more scientists

• To change the experiment each time

What does the image of Pikachu in a lab coat represent in the context of the lesson?

• A scientist conducting experiments

• A chef cooking food

• A teacher grading papers

• A student taking a test

Tags

NGSS.MS-ETS1-4

What is the main purpose of repetition in science experiments?

• To reduce the effect of errors.

• To make the experiment more interesting.

• To use more materials.

• To finish the experiment faster.

According to the example, what does Pikachu do to demonstrate repetition?

• Pikachu throws each airplane 5 times instead of just once.

• Pikachu builds 5 different airplanes.

• Pikachu asks 5 friends to throw airplanes.

• Pikachu throws 5 airplanes at the same time.

Tags

NGSS.MS-ETS1-4

What increases the likelihood that the outcome of an experiment will be accurate?

• Repeating the experiment with the same results

• Changing the experiment every time

• Using different scientists for each trial

• Only performing the experiment once

Tags

NGSS.MS-ETS1-4

Who should conduct multiple trials in an experiment to reduce errors?

• The same scientist

• Different scientists each time

• A group of students

• A computer program

Why is it important to conduct multiple trials in an experiment?

• To reduce errors

• To make the experiment longer

• To use more materials

• To confuse the results

Tags

NGSS.MS-ETS1-3

NGSS.MS-ETS1-4

Suppose a scientist repeats an experiment five times and gets the same results each time. What does this suggest about the experiment’s outcome?

• The outcome is likely to be accurate

• The experiment is not working

• The results are random

• The scientist should stop experimenting