The term "degree heat inside molecules" is a bit misleading. It's important to clarify that:

* Heat is a form of energy transfer between objects at different temperatures.

* Temperature is a measure of the average kinetic energy of the molecules within an object.

Here's a breakdown of how temperature relates to molecular movement:

* Higher Temperature: Molecules move faster and vibrate more vigorously.

* Lower Temperature: Molecules move slower and vibrate less.

So, there's no "degree heat" inside molecules. Instead, we talk about the temperature of an object, which reflects the average kinetic energy of its molecules.

To measure the temperature of an object, we use a thermometer. Thermometers work by responding to the heat transfer between the thermometer and the object being measured. This heat transfer causes a physical change in the thermometer (like expansion of mercury or a change in electrical resistance), which is then calibrated to display a temperature reading.

Let me know if you have any other questions about temperature, heat, or the movement of molecules!