1. Descriptions, not explanations:

* Scientific laws are descriptive, not explanatory. They describe how things work, not why they work.

* Think of them like a recipe: it tells you what ingredients and steps to use to bake a cake, but not why those ingredients and steps work.

2. Based on empirical evidence:

* Laws are derived from repeated observations and experiments.

* They're supported by a vast amount of data, making them very reliable.

3. Universal and unchanging:

* Scientific laws are believed to hold true everywhere in the universe and at all times.

* They're considered unchanging, although our understanding of them might evolve as we gather more data.

4. Not absolute truths:

* While extremely reliable, laws are not absolute truths.

* They're open to revision if new evidence contradicts them.

* This is how science progresses – by constantly testing and refining its understanding.

5. Often expressed mathematically:

* Many scientific laws are expressed using mathematical equations for clarity and precision.

* This allows for precise predictions and calculations.

Examples:

* Newton's Law of Universal Gravitation: Describes the force of attraction between any two objects with mass.

* Law of Conservation of Energy: States that energy cannot be created or destroyed, only transformed from one form to another.

In short, scientific laws are powerful tools that summarize vast amounts of scientific knowledge, providing a framework for understanding and predicting the natural world. They are not absolute truths, but rather constantly evolving descriptions of how things work.