Answer
Yes, that is a good way to describe the situation.
Work Step by Step
This is explained in Figure 42.19.
In a semiconducting material, the energy gap is of moderate size, and the conduction band is mostly empty at low T. The material acts as an insulator.
With a rise in temperature, electrons can gain enough energy to hop into and partially fill the conduction band, which gives them a metallic band structure, making them decent conductors.