Question

question 37
which of the following best describes the mineral property cleavage?
the density of the mineral relative to that of water.
the manner in which the mineral surface reflects light.
the ability of the mineral to break along preferred directions.
the strength of the mineral.
question 38
which of the following volcanic hazards is expected to have the most wide - spread impact?
pyroclastic density currents
lava flows
lahars
ashfall

Explanation:

For Question 37, mineral cleavage is defined as the ability of a mineral to break along preferred directions due to its internal crystal - structure. The density relative to water is specific gravity, the manner of light reflection is luster, and strength is a different property.
For Question 38, ashtail can be carried by wind over long distances and has a wide - spread impact. Pyroclastic density currents, lava flows, and lahars are more localized in their impact areas.

Answer:

Question 37: The ability of the mineral to break along preferred directions.
Question 38: ashtail