How do heat patches heat up?

well heat is fast moving particles they collide with slow particles which is cold and the slow particles move fast too. In the end the slow particles move faster just as heat so they are not cold...

I dunno. How does anything heat up? Radiation from the sun, probably.

There is a Wiki aricle titled "Solar water heating", not sure if there is a better title than that.Evaporation only occurs when the surface liquid gains enough energy to vapourise. If the whole body...

Sand does. Think about going to the beach on a hot summer day. The sand is always very hot, and most people will either be dancing around in the sun or wearing sandals. However, when they wade in the...

Heat goes up