1. What is the difference between eruptive volcano energy and stored volcano ene
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1. What is the difference between eruptive volcano energy and stored volcano energy? 2. Why is it impractical to tap into geothermal energy directly from a magma chamber? 3. List and describe the three types of volcanic geothermal systems? 4. What are the three classes of metals? 5. What are the two general ways in which metallic ore deposits can develop? 6. Canada has one of the largest nickel deposits in the world. Where is it located and describe how this deposit formed? Where is Cyprus located? What the word mean? What was the importance of Cyprus in ancient history? 7.Explanation / Answer
2) For geothermal energy to succeed there must be heat, it must be accessible, and you must be able to move water around it. These three simple requirements can be difficult to find together.
Across most of the planet the hot material is simply too deep down to be economically within reach. The temperature of the Earth’s crust generally increases by 25°C for every 1km depth; for geothermal to be economical that value must be nearer 50 or even 150°C/km. That means you need to be near something geologically unusual: either thinned crust (so you’re closer to the hot mantle), or features such as plate boundaries or volcanoes which can direct heat or magma toward the surface.
If that condition is met you must still be able to move water around. Rocks are not all alike, as some can allow water to easily flow through the pores and boundaries between grains, while others are more like a barrier. If water cannot flow to the borehole then it cannot be brought to the surface.
If the hot area doesn’t have any natural water then engineers can pump some down. However, if the rocks prevent it flowing and dispersing then the water will simply cool the area immediately around the borehole, making it pointless in geothermal terms.
3) The three main types of geothermal systems, based on their nature and geological settings, are:
Volcanic systems are in one way or another associated with volcanic activity. The heat sources for such systems are hot intrusions or magma. They are most often situated inside, or close to, volcanic complexes at or near plate boundaries or hot spots. Permeable fractures and fault zones but also permeable strata such as sediments, ignimbrites or lavas control the flow of water in volcanic systems.
In convective systems the heat source is the hot crust at depth in tectonically active areas, preferably with above average heat-flow. Here the geothermal water has circulated to considerable depth (> 1 km), through mostly vertical fractures, to extract the heat from the rocks.
Sedimentary geothermal systems are probably the most common type worldwide. We are concerned here with such that occur in the sediment filled parts of the East African Rift. They occur mainly in the Western Rift, but locally also in the Eastern Rift where volcanism was sparse.
4)
Base metal
In chemistry, the term base metal is used informally to refer to a metal that is easily oxidized or corroded, and reacts easily with dilute hydrochloric acid (HCl) to form metal chloride and hydrogen. Examples include iron, nickel, lead and zinc. Copper is considered a base metal as it is oxidized relatively easily, although it does not react with HCl. Base metal is commonly used in opposition to noble metal.
In alchemy, a base metal was a common and inexpensive metal, as opposed to precious metals, mainly gold and silver. A longtime goal of the alchemists was the transmutation of base metals into precious metals.
Ferrous metal
The term "ferrous" is derived from the Latin word meaning "containing iron". This can include pure iron, such as wrought iron, or an alloy such as steel. Ferrous metals are often magnetic, but not exclusively.
Noble metals
Noble metals are metals that are resistant to corrosion or oxidation, unlike most base metals. They tend to be precious metals, often due to perceived rarity. Examples include gold, platinum, silver, rhodium, iridium and palladium.
7) Cyprus officially the Republic of Cyprus is an island country in the Eastern Mediterranean and the third largest and third most populous island in the Mediterranean. Cyprus is located south of Turkey, west of Syria and Lebanon, northwest of Israel, north of Egypt, and southeast of Greece.
cyprus means a fabric, esp a fine silk, lawn, or crepelike material, often black and worn as mourning OR
Island republic in the eastern Mediterranean Sea, south of Turkey and west of Syria. Nicosia is its capital and largest city.
The naming of the island is a matter of dispute amongst historians. One theory suggests that the large quantity of copper deposits on the island gave the name Cyprus, as copper has the Latin name of cuprum (Cu).
Another theory is based on mythology: It proposes that the name was given by the goddess Aphrodite(also known as Kyprida) who was born on the island.
Cyprus has always had strategic importance. It was a must-have strategic point for all major powers at different times. The island was occupied by the Assyrians, the Egyptians, the Persians, the Rashidun and Umayyad Arab Caliphates, the Lusignans, the Venetians, the Crusaders, the English, and finally the Ottomans.
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