Mining Methods Quick Check

1 of 31 of 3 Items
Question
Which statement is true about the potential environmental impact on local water by both surface and underground mining?(1 point)
Responses

Both types of mining can cause acid and heavy metals to get into local water.
Both types of mining can cause acid and heavy metals to get into local water.

Both types of mining can lead to a lowered water table.
Both types of mining can lead to a lowered water table.

Both types of mining lead to overburden clogging small local waterways.
Both types of mining lead to overburden clogging small local waterways.

Both types of mining cause high risk of sediment runoff.

5 answers

Both types of mining cause high risk of sediment runoff.
What environmental impacts are caused by both surface mining and underground mining? Select the two correct answers. (1 point)
Responses

destruction from overburden
destruction from overburden

sinkhole formation after mining is complete
sinkhole formation after mining is complete

local water contamination
local water contamination

destruction of ecosystems
destruction of ecosystems

release of underground gases
The correct answers are:

1. Destruction from overburden
2. Local water contamination
Mining Methods Quick Check
3 of 33 of 3 Items
Question
When compared to underground mining, why does surface mining have a larger impact on land ecosystems?(1 point)
Responses

In surface mining, large areas of land are completely cleared of vegetation and topsoil.
In surface mining, large areas of land are completely cleared of vegetation and topsoil.

In surface mining, the overburden is less extensive.
In surface mining, the overburden is less extensive.

Surface mining is more likely to contaminate area waterways.
Surface mining is more likely to contaminate area waterways.

In surface mining, the land collapses easily after mining is complete.
In surface mining, the land collapses easily after mining is complete.
In surface mining, large areas of land are completely cleared of vegetation and topsoil.
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