Scientific research involves systematically investigating phenomena, using empirical evidence, and employing rigorous methods to gain knowledge about various aspects of the world. It aims to answer questions, test hypotheses, and contribute new insights to existing knowledge.
A testable prediction or explanation for an observed phenomenon.
Control group: The group in an experiment that does not receive treatment or intervention; used for comparison purposes.
Independent variable: The variable manipulated by researchers in an experiment; it is hypothesized to have an effect on another variable (dependent variable).