Question

drag the right word to its definition
of a rock or mineral, the
color of its powder as seen
when the rock or mineral is
rubbed against a hard
surface.

Explanation:

The definition describes the streak of a rock or mineral. Streak is determined by rubbing the mineral on a hard surface (like a streak plate) and observing the color of the resulting powder. Hardness refers to a mineral's resistance to scratching, and cleavage is about how a mineral breaks along flat planes.

Answer:

streak