Question

natural resources: rocks and minerals online practice
complete this assessment to review what youve learned. it will not count toward your gr
an unknown mineral breaks along smooth planes when hit with a hammer. which mineral
property does this show?
(1 point)
○ cleavage
○ fracture
○ density
○ hardness

Explanation:

To solve this, we analyze each option:

• Cleavage: The tendency of a mineral to break along smooth, flat planes. This matches the description.
• Fracture: Breaks along irregular surfaces, not smooth planes. Eliminate.
• Density: Mass per unit volume, unrelated to breaking pattern. Eliminate.
• Hardness: Resistance to scratching, not about breaking planes. Eliminate.

Answer:

A. cleavage