Question

1. after the ore is extracted, what process is used to remove the metal from the ore? (4 points)

evaporation
settling
melting
deposition

1. all the following are examples of mining techniques except (4 points)

rolling wave planning
strip mining
open pit mining
longwall mining

Explanation:

For question 8, smelting is the process of extracting metal from ore by heating it to high - temperatures to separate the metal from its ore matrix. Evaporation is for separating a liquid from a solid or other liquids by vaporizing the liquid, settling is for separating solids from liquids by gravity, and deposition is a process of laying down sediment or a substance from a solution. For question 9, strip mining, open - pit mining, and longwall mining are mining techniques. Rolling wave planning is a project management technique, not a mining technique.

Answer:

1. C. smelting
2. A. rolling wave planning