Understanding Scientific Investigations

Which of the following is the first step in defining a scientific problem from the seventh-grade curriculum?

• Collecting data

• Identifying variables

• Defining the problem

• Analyzing information

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

• Replication involves multiple trials, while repetition is done by others.

• Repetition involves multiple trials, while replication is done by others.

• Both involve multiple trials.

• Both are done by others.

Which of the following best describes an experiment?

• A systematic observation without variable control

• A study involving the identification and control of variables

• A collection of data from various sources

• An analysis of historical data

In an experiment, what is the term for the variable that is changed or controlled to test its effects on the dependent variable?

• Test variable

• Outcome variable

• Control variable

• Random variable

Which scientific field primarily uses the method of systematic observation to gather data?

• Biology

• Geology

• Physics

• Chemistry

When planning a scientific investigation, which of the following is crucial for supporting scientific understanding?

• Using appropriate reference materials

• Making predictions

• Defending conclusions

• Identifying variables

Why is replication important in scientific investigations?

• It ensures the experiment is conducted multiple times.

• It allows others to verify the results.

• It helps in identifying variables.

• It aids in data collection.

Which of the following is NOT a characteristic of an experiment?

• Control of variables

• Systematic observation

• Random data collection

• Identification of variables

In an experiment, what is the term for the variable that is measured or observed?

• Test variable

• Outcome variable

• Control variable

• Independent variable

Which method is commonly used in physics to explain scientific phenomena?

• Systematic observation

• Experimentation

• Historical analysis

• Data collection