Environmental science/ minerals and mining
About_____________ percent of the world's salt water comes from the solar evaporation process
30%
A quarry could also be called.
An open pit
A serious hazard of coal mining is.
An underground mine fire.
Evaporits most commonly form in.
Arid regions where rates of evaporation are high
Which of the following is NOT a characteristic of mineral?
Atoms in random patterns
Surface mining can cause.
Both air and noise pollution 💀🔊
Before mining a site,a mining company must do all the following EXCEPT.
Cut into a section of the longwall
Which of the following is NOT affected when soil is removed from surface mine?
Deep coal seams
Which of the following is one reason why undersea mining has been largely unsuccessful to date?
Deposits at great water depth are difficult to work.
What do hot,subsurface waters contain when they are identified as hydrothermal solutions?
Dissolved minerals
What is one property that may be used to distinguish metallic from nometallic minerals?
Electrical conductivity
Solar evaporation is practical in order to obtain salt from sea water in climates where rainfall exceeded by.
Evaporation
The first step in finding and ore deposit is.
Exploring rock formations for mineralization.
Which of the following is not a way that ore minerals may form?
Flooding of empty streambeds and rivers
Nonmetallic minerals prized mainly for their beauty,rarity,or durability are called.
Gemstones
Dredging streambeds may be an effective technique for mining.
Gold
For mining to be profitable, the price of the final product must be.
Greater than the cost of extration and refining.
Which of the following would NOT likely be mined using solution mining?
Gypsum
Placer deposits are surface deposits concentrated by.
Mechanical action
Mining companies can identify areas of valuable minerals resources by.
Mineral Exploration
Placer deposits
Minerals concentrated by wind and water movement into surface deposits
Ore minerals
Minerals that contain valuable substance.
Surface mining
Mining method used when ore deposits are located close to Earth surface.
What can contaminate a river as a result of dredging?
Muddy sediments
Quarry
Open pit used to mine materials near the surface.
Subsidence can result from the collapse of.
Pillars in abandoned mines
Smelting
Process by which crushed ore is melted at high temp. To separate impurities from molten metal.
Reclamation
Process of returning land to its original or better condition after mining.
What is the arrangement of atoms in a mineral?
Regular, repeating geometric patterns
Aggregates
Sand,gravel and crushed rock.
Which of the following is a water contaminat that cause acid mine.
Sulfuric acid
Which of the following is NOT a regulation mining companies must follow?
The Hazardous Products Act
Subsidence
The sinking of regionso of the ground with little or no horizontal movement.
Longwall
The wall of coal seam.
The first step in surface coal mining is.
To remove and set aside the soil that covers the area to be mined.
Alloy
Two or more metals that are combined.
