Which environmental impact would not be a result of placer mining quizlet?

Which environmental impact would not be a result of placer mining? contamination of underground aquifers.

What is placer mining quizlet?

placer mining. a form of mining that required little technology or skill, placer mining techniques included using a shovel and a washing pan to separate gold from the ore in streams and riverbeds. An early phase of the mining industry, placer mining could be performed by miners working as individuals or in small groups.

Which type of mining is likely the least harmful to the environment quizlet?

Placer mining can be less damaging to the environment than surface mines, as the sediment is returned to the water after the minerals have been extracted.

IT IS IMPORTANT:  What is first law of thermodynamics in ecology?

Which of the following types of mining is the least environmentally harmful?

Sub-Surface mining is likely the least harmful to the environment.

Which of the following would you not use to classify a rock you found on a recent hike quizlet?

formed by heat and pressure. Which of the following would you not use to classify a rock you found on a recent hike? color. One of the largest earthquakes ever recorded in North America occurred around New Madrid Missouri in 1812.

What are placer deposits quizlet?

What is placer deposit? An accumulation of minerals that have formed from gravity separation; occurs in sedimentary processes.

Which among the following minerals are examples of placer deposits?

The main minerals and metals associated with placer deposits are gold, cassiterite (tin), platinum, diamonds, magnetite, and some gemstones.

Which type of mining is likely the least harmful to the environment a Surface mining placer mining subsurface mining one of the above?

Sub-Surface mining is likely the least harmful to the environment. Hence correct option is c. subsurface mining.

Which type of mining is likely the least harmful to the?

Subsurface mining is likely the least harmful to the environment.

What type of mining is the most damaging to the environment?

Open-pit mining often involves the removal of natively vegetated areas, and is therefore among the most environmentally- destructive types of mining, especially within tropical forests.

How does placer mining affect the environment?

Placer mining is a way of obtaining mineral and metal resources from loose river sediments. … Due to the smaller scale of placer mining, it does less damage to the surrounding environment compared to other methods of surface mining, though it can still disrupt river ecosystems with pollution and sediments.

IT IS IMPORTANT:  Question: What is the solution to landfills?

What is the biggest environmental risk of mining quizlet?

Mining causes disturbed lands, oil spills and blowouts, and mine waste dumping. Processing produces solid wastes, pollutes the air, water, and soil, and produces radioactive material, using this causes thermal water pollution, solid and radioactive wastes, and health hazards.

What are the environmental impacts of underground mining?

Underground mining has the potential for tunnel collapses and land subsidence (Betournay, 2011). It involves large-scale movements of waste rock and vegetation, similar to open pit mining. Additionally, like most traditional forms of mining, underground mining can release toxic compounds into the air and water.

Which environmental impact would not be a result of a placer mining?

Which environmental impact would not be a result of placer mining? contamination of underground aquifers.

Which would not be a principal problem that has resulted from the construction of large dams?

Which would not be a principal problem that has resulted from the construction of large dams? salinization of water bodies and surrounding soil. What would you not find in water that has been through tertiary treatment?

Which of the following is an example of a non point source of water pollution quizlet?

Examples of Non-point sources? industrial spills, increased run-off, increased sediments in water, animal waste, oil, chemicals,fertilizers.