Unit 4 Practice Flashcards
Why have most companies started to extract lithium from brine water rather than mineral ore?
The process is less expensive.
Which ore(s) is aluminum mined from?
Bauxite and Corundum
What ore is copper mined from?
Chalcopyrite
What ore is tin mined from?
Cassiterite
The mining of which resource produces the most toxic waste?
Copper
Which are the best solutions for reducing the mine production of copper and conserving copper ore? Select the two correct answers.
Use aluminum as a substitute.
Stop buying electrical appliances.
Make electrical appliances without wires.
Recycle electronic waste.
Use glass as a substitute.
Use aluminum as a substitute
Recycle electrical waste
Which of the following is a soft metal and the lightest element that is a solid at standard temperature and pressure?
Lithium
Why has demand for rare earth minerals increased in recent years?
They are used in a growing number of electronics.
In what type of mine would a rock burst most likely happen?
a large longwall mine
What step will be most effective for a manufacturer that wants to reduce the human costs of extracting the minerals it uses in its smartphones?
verifying that child labor was not used in mining these minerals
A mining company’s reclamation plan is not permitted because there is no evidence that funding has been secured to repurpose the land in the manner proposed. What issue related to land reclamation is this an example of?
cost issue
Which statement is true about environmental risks of underground mining?
Underground mining increases risk of land collapse and sinkholes.
An unknown mineral breaks along smooth planes when hit with a hammer. Which mineral property does this show?
cleavage
