Rocks and Earth Materials

Diamonds are formed when carbon-containing materials (like coal) are subjected to extreme pressure and heat over long periods in Earth's mantle. The carbon atoms rearrange into a crystal lattice structure, creating diamonds. Graphite requires different formation conditions, obsidian is volcanic glass, and coal doesn't just become a smaller version of itself.

Ores are rocks or minerals from which metals can be extracted profitably. They are rich in metal content. Allotropes are different forms of the same element, metallloids are elements with properties between metals and non-metals, and slag is waste material from metal extraction.

Pumice is a volcanic rock formed from frothy lava that rapidly cools, trapping numerous gas bubbles which make it less dense than water. This unique structure allows pumice to float, unlike sand rock, quicksalt rock, or purnice rock (a misspelling).

Marble is a metamorphic rock formed from limestone undergoing intense heat and pressure. Metamorphic rocks are transformed from existing rock types. Igneous rocks form from cooling magma, sedimentary rocks from accumulated deposits, and conglomerate is a specific type of sedimentary rock.

Stone Cold Steve Austin (SCSA) and The Rock had three iconic WrestleMania matches: WM 15 (1999), WM 17 (2001), and WM 19 (2003). These were among the most famous matches in WWE history, making options A, C, and E correct. They did NOT face off at WM 16 or 18.

Hard Granite is the correct answer. The Brihadeeswarar Temple (Thanjavur Periyakoil) was constructed primarily from hard granite rock. This is a well-documented architectural fact - the temple required transporting massive granite stones from distant quarries. Soft Marble and Aplite are incorrect, and 'Hard Monzogranite' is not the standard term used for this temple's construction material.

Earth's core is primarily composed of iron and nickel, with iron being the dominant element. The inner core is solid, while the outer core is liquid. Rocks, silica, and magnesium are more abundant in the mantle and crust.

Clouds are composed of tiny ice crystals or water droplets. The option 'crystals' refers to these ice crystals that form high clouds like cirrus.

Volcanoes are classified by their eruptive type and formation location. Fissure vents erupt through linear cracks, submarine volcanoes form on the ocean floor, and subglacial volcanoes erupt under ice sheets - all are recognized volcanic types.

Diamonds are formed from carbon (coal is primarily carbon) subjected to extreme heat and pressure over long periods deep within the Earth. This process transforms the carbon atoms into a crystalline structure. Graphite is also carbon but requires different conditions, while obsidian is volcanic glass.

Magma is molten rock beneath Earth's surface, while lava is the same material once it erupts onto the surface. Basalt is a type of volcanic rock formed from cooled lava, not molten material itself.

Igneous rocks are formed through the cooling and solidification of molten magma (underground) or lava (on the surface). This distinguishes them from sedimentary rocks (formed from compressed sediments) and metamorphic rocks (formed from existing rocks under heat and pressure). Examples include granite and basalt.

Solid carbon dioxide is commonly known as 'Dry Ice' because it sublimates directly from solid to gas at atmospheric pressure, leaving no liquid residue. This property makes it useful for refrigeration and special effects where dry cooling is needed without condensation.

Volcanoes release large quantities of sulfur dioxide and nitrogen oxides into the atmosphere. These gases react with water vapor to form sulfuric and nitric acids, which fall as acid rain, impacting local ecosystems.

Basalt is the most common rock type found in Earth's crust, particularly in the oceanic crust which covers about 70% of Earth's surface. It forms from the rapid cooling of basaltic lava and makes up the majority of the ocean floor. Continental crust has more varied composition, but overall basalt dominates Earth's rock volume.