Here's why:
* Phenomenon refers to any observable occurrence or fact that can be studied, but doesn't necessarily have a known explanation.
* Law describes a consistent and predictable relationship between elements in nature, often expressed mathematically.
* Theory is a well-substantiated explanation of some aspect of the natural world, supported by evidence.
* Hypothesis is a proposed explanation for an observation, which can be tested through experimentation.
So, while a phenomenon might be the starting point for scientific investigation, it's simply an observed pattern without any attached explanation.
