How does conduction transport heat through a steel rod that is placed in a fire?
A. Energy spreads from one end of the rod to the other through
molecular collisions.
O B. Hot steel molecules move down the molecular matrix toward the
cool end of the rod.
C. Higher velocities of warmer steel molecules cause them to travel
from one end to the other.
D. Waves of electromagnetic energy travel down the steel rod from
one end to the other.