Here's a breakdown of what makes a scientific explanation "logical":

* Based on evidence: Scientific explanations rely on observations, experiments, and data to support their claims.

* Testable: A scientific explanation should be able to be tested and potentially falsified (proven wrong) through further experimentation or observation.

* Parsimonious: The simplest explanation that fits the evidence is generally preferred.

* Consistent with other scientific knowledge: A new explanation should fit within the broader framework of established scientific understanding.

Other terms you might see:

* Scientific theory: A well-substantiated explanation of some aspect of the natural world, supported by a large body of evidence. Theories can be modified or replaced as new evidence emerges.

* Scientific model: A simplified representation of a phenomenon or system, used to understand and predict its behavior.

* Scientific hypothesis: A testable prediction about the relationship between variables.

It's important to note that "logical" in science doesn't necessarily mean "absolute truth." Scientific explanations are always subject to refinement and change as our understanding of the world evolves.