Question 41

What types of rocks are found at a convergent boundary?

An observational study is appropriate for identifying the types of rocks found at a convergent boundary, as it involves gathering data through observation without manipulation or experimentation.

A) Which type of metal conducts electricity best?

This question is not suitable for an observational study because it requires experimentation to measure conductivity under controlled conditions, making it more appropriate for a comparative or experimental study rather than pure observation.

B) Does adding salt to water affect how fast the water evaporates?

This question also isn't suitable for an observational study, as it involves a direct manipulation of variables (adding salt) and measuring the resulting effect on evaporation, which necessitates an experimental approach.

C) What types of rocks are found at a convergent boundary?

This question is suitable for an observational study, as researchers can examine and categorize the rocks present in natural settings without altering the environment or conducting experiments. It relies on observing existing conditions to gather data.

D) How does the mass of an object affect the strength of its gravitational field?

This question is not appropriate for an observational study since it requires a controlled experimental setup to determine the relationship between mass and gravitational strength, rather than simply observing existing phenomena.

Conclusion

The question regarding the types of rocks found at a convergent boundary is the only one that fits the criteria for an observational study, as it focuses on the observation and categorization of naturally occurring phenomena. All other options involve manipulation of variables or require experimental conditions to yield meaningful results, making them unsuitable for observational methods.