6. Discuss the pros and cons ol e power 7. Discuss the ways in which solar, wind

Question

6. Discuss the pros and cons ol e power 7. Discuss the ways in which solar, wind, wave, and tidal ener gy are harnessed. 8. Describe the ways in which igneous processes can form metallic ore deposits. 9. How can surface processes create ore deposits? 10. Describe two ways in which resources are mined, and discuss the pros and cons of each. 11. Discuss common uses for metallic resources and nonmetallic resources. Discuss the tension between our need to exploit resources for energy and materials and the environmental impact of that exploitation. Which is not a type of coal? a. lignite c. sulfite 12. 13. b. bituminous d. anthracite

Explanation / Answer

8. Describe the ways in which igneous processes can form metallic ore deposits?

The ways in which igneous processes can form metallic ore deposits are :

1) Magmatic deposits

A)   Incompatible elements: Some igneous rocks enriched in incompatible factors (Be, Li, Rare Earth Elements, U, Th, Rb, Au) factors that dont want to enter the mineral structures which might be crystallizing from the magma. As magma crystallizes, these factors continue to be in the magma and their concentration will increase. Eventually this incompatible-rich magma crystallizes, forming incompatible-wealthy rocks. Often, those rocks can be very coarse-grained. Known as pegmatite. Large grain size (30 inches and longer) is due to excessive the water (an incompatible compound) content material of the magma. Tourmaline, beryl, aquamarine, and emerald are examples of the uncommon minerals frequently observed in pegmatite.

B) Crystal settling: gravity causes early-crystallizing dense minerals to sink to backside of magma chamber (can also go with the flow to pinnacle if they're much less dense than magma). Process may additionally produce monomineralic layers. Chromite, magnetite, and platinum-group mineral deposits regularly shaped on this way.

C) Diamonds: Form at very high pressures, Usually calls for 100-200 km intensity. Brought hastily to the floor by way of Kimberlite magmas. These are fuel-rich magmas that explode their manner to the surface. May erupt at very excessive velocities. Only need some diamonds according to ton of rock to make the rock an ore.

2) Hydrothermal deposits

Hot waters percolating thru the rocks surrounding an intrusion leach factors from them. Later deposits these elements in minerals that crystallize whilst the fluids cool as they approach the surface. Often this method paperwork veins rich in sulfide minerals that comprise metals which includes Cu, Pb, Zn, Au, Ag, Pt, and U.

Some of the circulating fluids originate as water that percolates down from the surface. Other fluids may be expelled immediately from the crystallizing magma. Intrusion acts as a heat engine that pump water through the encompassing rocks.

Process is happening these days beneath the mid ocean ridges. Produce "black smokers" wherein warm fluids are expelled into the cold waters of the sea bottom. Minerals right away precipitate turning the fluid a smoky grey or black. Sulfide minerals provide the electricity for sulfur decreasing bacteria. These then act as a meals source for extra complex organisms. A complete habitat is powered by chemosynthesis. No daylight or photosynthesis is needed. May be how lifestyles originated in the world and possibly on different planetary our bodies, which includes Europa.

8. How can surface processes create ore ?

surface processes create ore by physical and chemical phenomena which motive attention of ore material inside the regolith, commonly by using the motion of the environment. This consists of placer deposits, laterite deposits, and residual or eluvial deposits. Processes are :

- erosion
deposition by means of sedimentary procedures, which include winnowing, density separation (e.G.; gold placers)
- weathering thru oxidation or chemical assault of a rock, both freeing rock fragments or developing chemically deposited clays, laterites, or supergene enrichment
- Deposition in low-electricity environments in seaside environments.

11. Discuss common uses for metallic resources and nonmetallic resources.

Metallic:

Gold- gold is an extraordinary, treasured and durable valuable metal with a versatile use; gold is relatively heavy and may be made right into a wide variety of tricky rings designs. Apart from getting used as jewelry, gold is also used in dentistry, medicine, coins, and applications for the aerospace enterprise. However, gold has a excessive corrosion resistance and could no longer tarnish from regular use, accordingly making it ideal for rings. Gold is usually alloyed with different metals to increase its energy and sturdiness, in addition to to alter its hue. Gold is available in numerous degrees of purity. Yellow gold is visible most customarily, but white gold (gold mixed with palladium, nickel and silver) is likewise popular in a few parts of the sector, in particular for bridal earrings.

Silver- silver is a light valuable substance used for making earrings, mobile cellphone covers, first-class silverware, coins and images. Because of its versatility, availability, affordability and enchantment; it is used for various things and it's miles very shiny, durable and clean to paintings with. Silver is also drastically cheaper than gold or platinum.

Non metallic:

Gravel- gravel is one of the most on hand herbal deposits labeled by using particle length variety; it consists of length training from granule- to boulder-sized fragments which might be gotten from river channels, river flood plains, and glacial deposits. Gravel is used for diverse buildings and primarily it’s frequently used for making production materials consisting of concrete blocks, bricks, pipes, mixing with asphalt and as production fill.

Sand- this is the maximum reachable herbal resources which discovered inside the beach, roadside, water channels, rivers and streams, it's miles mainly quartz, fashioned by means of weathering of igneous rocks like granite, it is available in various sizes of grain. Sand has kinds of makes use of. It is used in sandbags, for creation or to line the floors of arenas and other surfaces, for playgrounds and hosts of different uses.

12.Discuss the tension between our need to exploit resources and materials and the environmental impact of that exploitation.


Due to increased technology, rates of deforestation have greatly increased.

A rapid increase in population that is now increasing gradually and consume many natural resources.

Mining of gold and diamonds to produce jewelry, unnecessary commodities for human life or advancement but in amounts excessive of what is needed, because people consume more than is necessary or waste what they have.

Excessive demand often leads to conflicts due to intense competition. Organizations such as Global Witness and the United Nations have documented the connection.

Due to increased technology, rates of deforestation have greatly increased.

A rapid increase in population that is now increasing gradually and consume many natural resources.

Mining of gold and diamonds to produce jewelry, unnecessary commodities for human life or advancement but in amounts excessive of what is needed, because people consume more than is necessary or waste what they have.

Excessive demand often leads to conflicts due to intense competition. Organizations such as Global Witness and the United Nations have documented the connection.

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