Rocks and Earth Materials

Marble is a metamorphic rock that forms when limestone is subjected to high heat and pressure over time. This process recrystallizes the calcite in limestone, creating the interlocking crystals that give marble its characteristic appearance.

This is the correct answer as limestone consists of a single mineral.

This is the correct answer as only statement B is correct. Limestone is the basic raw material for the cement industry.

This is the correct answer as common salt is largely derived from the ocean waters. It is not a sedimentary mineral.

The metallic core of lithosphere is called lithophile

The Silicates are by far the largest group of minerals present rocks. Chemically, these minerals contain varying amounts of silicon and oxygen. It is easy to distinguish silicate minerals from other groups, but difficult to identify individual minerals within this group. None are completely opaque. Most are light in weight. The construction component of all silicates is the tetrahedron. A tetrahedon is a chemical structure where a silicon atom is joined by four oxygen atoms (SiO₄).

Oxygen is the most abundant element in the Earth's crust, accounting for nearly half of its total mass. It is primarily found in combination with other elements in minerals like silicates and oxides.

Molten rock is called magma when it is beneath the Earth's surface. Once it erupts and reaches the surface, it is referred to as lava.

A caldera lake forms when a large volcanic crater (caldera) is created by the collapse of land following an eruption and subsequently fills with water. Karst lakes are formed by the dissolution of soluble rocks.

Granite, basalt, and volcanic rocks are all formed from the cooling and solidification of molten magma or lava, which classifies them as igneous rocks.

Lava is molten rock (magma) that has been expelled from the interior of a terrestrial planet or a moon onto its surface. Once it cools and solidifies, it forms igneous rock. It is distinct from 'larva', which refers to an insect's developmental stage.

Loess is a clastic, wind-deposited sedimentary rock formed by the accumulation of wind-blown dust. Basalt, granite, and gabbro are all types of igneous rocks.

Coal and petroleum are fossil fuels found in sedimentary rocks, which are formed by the accumulation and compression of organic matter over millions of years.

Geology is the science that deals with the Earth's physical structure and substance, its history, and the processes that act on it.