A car that moves faster has more kinetic energy than a car that moves slower. The atoms in a hot object move faster than atoms in a cold object. The atoms in a hot object have more kinetic energy than the atoms in a cold object. The rubber band stored the potential energy. Potential energy is the energy of position or state.
Sunlight is a form of radiation.
The sun's energy is radiated through space to our planet. Radiation transfers heat at the speed of light without the aid of matter. Regelation occurs when something melts under pressure and then refreezes when the pressure is removed. For instance, ice skates apply pressure to the ice rink and melt the ice. The water refreezes as soon as the skate removes the pressure.