Question

how is streak different from color in mineral identification?
streak varies depending on lighting conditions
streak can only be tested on metallic minerals
streak changes with temperature
streak is the same regardless of the minerals surface color

Explanation:

The color of a mineral can vary due to impurities or surface - related factors. Streak, which is the color of the powdered form of the mineral when scratched on a streak plate, is a more consistent property for mineral identification as it is not affected by surface - level characteristics or impurities in the same way as the visible color of the whole mineral.

Answer:

Streak is the same regardless of the mineral's surface color