Mining MN

The first step in surface coal mining is?

• to remove and set aside the soil that cover the area to be mined

• to use heavy equipment to take core samples

• to test to see if quarrying would be more effective

• to make cuts in the coal for easier removal

Tags

NGSS.MS-ESS2-2

A serious hazard of coal mining is

• a high pressure water blast

• an aggregation

• excess overburden

• an underground mine fire/explosion

Tags

NGSS.MS-ESS3-2

Dredging riverbeds may be an effective technique for mining?

• silica

• coal

• gold

• sulfur

Tags

NGSS.MS-ESS3-1

Before mining a site, a mining company must do all of the following except

• obtain permits

• comply with federal regulations

• obtain bonding/insurance

• cut into a section of the longwall

Tags

NGSS.MS-ETS1-1

Nonmetallic minerals prized mainly for their beauty, rarity, or durability are called?

• aggregates

• overburden

• native elements

• gemstones

Which of the following is not affected when soil is removed from a surface mine?

• Plant life

• soil nutrients

• animal habitat

• deep coal seams

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

Mining companies can identify areas of valuable mineral resources by

• mineral exploration aka core samples

• smelting

• mineral excavation

• dredging

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS3-1

Which of the following is not a way that ore minerals may form?

• cooling of magma

• circulation of hydrothermal solutions through rocks

• flooding of empty stream beds and rivers

• evaporation of water that contains salts

Tags

NGSS.MS-ESS3-1

Which of the following is one reason why undersea mining has been largely unsuccessful to date?

• deposits at great water depths are difficult to mine, not cost effective

• ocean water is too salty

• there is too much aggregate on the ocean floor

• magma exists under the ocean floor

Tags

NGSS.MS-ETS1-1

Which of the following is an example of a gemstone?

• gypsum

• sapphire

• gravel

• glass