Grade 12 EM Chapter 1 Quiz No. 2

________ is a rock with enough of an important element to make it worth mining.

• ore

• plasma

• mineral

• debris

Tags

NGSS.MS-ESS3-1

________ a process in which information is gathered about the Earth's surface from above.

• Remote sensing

• Photography

• Satellites

• Surface digging

To make sure that the deposits of mineral ores are large enough to be extracted, a _______________ is carried out. The aim of this is to estimate the grade and tonnage of the mineral of interest present in a deposit.

• resource evaluation

• sample sizing

• Testing

• rock gathering

a type of mining used when the mineral is either exposed on the surface or overlain by only small amounts of overburden.

• Surface mining

• Sub-surface mining

• deep mining

• Shaft mining

This type of mining is used when a valuable deposit is located near the surface, often buried below a thick layer of worthless material. The material above the deposit is called overburden.

• Open pit mining

• deep mining

• slope mining

• overburden

Tags

NGSS.MS-ESS3-1

involves digging tunnels into the ground to reach mineral deposits

that are too deep to be removed

• Sub surface mining

• surface mining

• both

• none of these

These are factors affecting the viability of extraction of minerals. (more than 1 answer)

• the costs of exploration and extraction

• geology

• climate

• accessibility

Tags

NGSS.MS-ESS3-1

NGSS.MS-ETS1-1

__________ are areas that have never been mined for minerals. The chances of finding a deposit there are low.

• Greenfield sites

• Brownfield sites

• Blackfield sites

• Redfield sites

___________ are areas that have already been mined. They usually have a higher strike rate

• Brownfield sites

• Greenfield sites

• Bluefield sites

• Blackfield sites

The quality of the mineral deposit is another important factor in deciding to open a mine. High-grade ores will yield more of the required chemical elements than low-grade ores.

• False

• True

Tags

NGSS.HS-ESS3-1

NGSS.HS-ESS3-2