This document provides an explanation of what an explanation is. It states that an explanation describes facts to clarify causes, context and consequences, and may establish or clarify rules and laws. An explanation is represented through various media and subject to interpretation. In scientific research, providing explanation is one purpose for conducting studies to uncover new knowledge and relationships. The document then discusses different types of explanations and provides an example explanation of photosynthesis, describing the process by which plants convert sunlight into sugar.