Question

Define the following ..
Crust
sial
Sima
Core​

Answer 1

Answer:

crust-In geology, a crust is the outermost layer of a planet. The crust of the Earth is composed of a great variety of igneous, metamorphic, and sedimentary rocks.

sial-the lighter outer portion of the earth composed mainly of solid or molten rocks rich in silica and alumina — compare sima. sial

sima-In geology, sima (/ˈsaɪmə/) is the name for the lower layer of the Earth's crust. This layer is made of rocks rich in magnesium silicate minerals. ... The sima layer is also called the 'basal crust' or 'basal layer' because it is the lowest layer of the crust.

core-the central part of a fleshy fruit, containing the seeds. the central, innermost, or most essential part of anything. Also called magnetic core.

Answer 2

Answer:

crust:

crust is the outermost layer of a planet.

sial:

sial refers to the earth's crust upper layer.

sima:

it is the earth's crust lower layer.

core:

at the centre of the earth lies the core.