Question

interpreting diagrams: 1. what mineral property is being tested in the diagram above? a. cleavage b. hardness c. luster d. streak

Explanation:

Testing the streak of a mineral involves rubbing it across a streak - plate to observe the color of the powder left behind. In the diagram, a mineral is being rubbed on a plate, which is the method for testing streak. Cleavage is related to how a mineral breaks along planes, hardness is tested by scratching, and luster is about the way a mineral reflects light. None of these other properties are being tested here.

Answer:

d. Streak