Question

Molten rock below the surface of the earth is known as?
a. Basalt
b. Laccolith
c. Lava
d. Magma

Answer 1

Hint:
It is a liquid or semi-liquid regular material from which all volcanic rocks are framed.

Complete solution:
Magma is found underneath the outside of the Earth, and proof of magmatism has likewise been found on other earthbound planets and some characteristic satellites. Other than liquid stone, magma may likewise contain suspended gems and gas bubbles.

Magma is delivered by softening of the mantle or the crust at different structural settings, including subduction zones, mainland crack zones, mid-sea edges and hotspots. Mantle and crustal melts move upwards through the outside where they are believed to be put away in magma chambers or trans-crustal gem rich mush zones. During their capacity in the hull, magma arrangements might be altered by partial crystallization, pollution with crustal melts, magma blending, and degassing. Finishing their climb, the covering, magmas may take care of a spring of gushing lava or set underground to frame an interruption. e.g., a volcanic dam or a ledge.

Cementing into rock happens either underneath the surface as nosy rocks or on a superficial level as extrusive rocks. Volcanic stone may shape with crystallization to frame granular, translucent rocks, or without crystallization to shape regular glasses. Volcanic rocks happen in a wide scope of topographical settings: shields, stages, orogens, bowls, enormous molten areas, broadened outside layer and maritime covering.

Hence, the correct answer is option D.

Note:
The magma can be derived from halfway melts of existing rocks in either a planet's mantle or crust. Regularly, the dissolving is brought about by at least one of three cycles: an expansion in temperature, a lessening in weight, or an adjustment in arrangement.