Final answer:
When precautions are not followed in an experiment, sources of error can impact the result. Irregularities in the object being measured, errors in measurement equipment or data recording, and external factors can introduce variability and inaccuracies. This can have a significant impact on the experiment's result.
Step-by-step explanation:
When precautions are not adhered to, several sources of error can impact the result of an experiment. Some expected observations may include irregularities in the object being measured, such as errors in the measurement equipment, human error in recording data, or external factors that affect the outcome. These errors can introduce variability and inaccuracies into the experiment's result. The impact on the result can be significant, leading to incorrect conclusions or invalidating the findings of the experiment.