Repetition vs Replication
What is it called when a scientist repeats their own experiment?
Repetition
What is a scientific theory?
A well-tested and widely accepted explanation of observations.
What is an independent variable?
The variable that is changed or tested in an experiment.
What are the steps of the scientific method?
Ask a question, research, form a hypothesis, conduct an experiment, analyze data, draw a conclusion.
What is a controlled experiment?
Running an experiment that tests how ONE independent variable changes the dependent variable while ALL other conditions remain constant
What is replication?
It is when another scientist conducts the same experiment to see if they achieve the same results.
Can a scientific theory become a scientific law?
No, they have different purposes in science.
What is a dependent variable?
The variable that is measured in an experiment.
Why is it important to have a hypothesis before conducting an experiment?
It provides a testable prediction that guides the research.
What is an investigation?
Using field studies or models to observe and record data to study the natural world
Give an example of replication.
Another scientist conducts the same experiment to see if they achieve the same results.
How does a scientific theory differ from a hypothesis?
A hypothesis is a testable prediction, while a theory is a well-substantiated explanation.
What are controlled constants?
Variables that are kept the same throughout an experiment.
What role does data play in scientific research?
Data provides evidence that supports or refutes a hypothesis.
What is the main difference between an investigation and an experiment?
An investigation is observational and does not test a hypothesis, while an experiment tests a hypothesis through controlled conditions.
Why is repetition important for accuracy?
It helps ensure that the results are consistent and not due to random chance.
What can cause theories to change over time?
New evidence or interpretations can lead to revisions.
How do scientists make an experiment controlled?
By keeping other factors constant while changing one variable.
How can observations lead to a scientific question?
Observations can highlight patterns that lead to further investigations.
Which type involves a hypothesis: an investigation or an experiment?
An experiment
Why is replication essential in science?
It verifies the original findings and confirms reliability.
What is the significance of a well-tested theory in science?
It provides an understanding of the natural world and predicts why things happen.
Why is it important to identify variables in an experiment?
To ensure the experiment is valid and that the results are due to the manipulation of the independent variable.
Describe how a scientist might analyze data.
By using statistical methods or averages to interpret results and draw conclusions.
How can both investigations and experiments contribute to scientific knowledge?
Both methods provide data and insights that can lead to new understandings, theories, and further questions in science.