A metal bar with a solid structure is heated at one end. By what process is thermal energy passed to the opposite end of the bar?
- AHeated molecules move along the bar, carrying energy to the other end.
- BHeated molecules move along the bar, giving energy to others along the bar.
- CHeated molecules stay completely still, but give energy to other molecules.
- DHeated molecules vibrate more rapidly and pass energy to other molecules.