MCQ
Just like a/an ________ ,the earth is made up of several concentric layers with one inside another.
Onion
The sediments fuse together with this natural cementing material called
Lime
Igneous is a _____ word meaning ______.
Latin, fire
The things present inside the earth are
Crust
Mantle
Core
Three major types of rocks:
igneous sedimentary metamorphic
Rock salt is an example of
chemically deposited sedimentary rock
The main mineral constituents of the continental mass are :
silica and alumina
The example of intrusive sedimentary rock.
Granite
The deepest mine in the world, is in ___________.
South Africa
Just beneath the crust is the _________ which extends up to a depth of 2900 km. below the crust.
mantle
_____ is actually fiery red molten magma coming out from the interior of the earth on its surface.
Lava
Sedimentary is a word derived from _____ word ______
Latin, sedentum
The chemical name for Iron is
Fe - Ferrous
Sometimes the molten magma cools down deep inside the earth’s crust. Solid rocks so formed are called ________ igneous rocks
intrusive
It is about ___ km. on the continental masses and only __ km. on the ocean floors.
35,5
When the molten magma cools, it becomes solid. Rocks thus formed are called _________ rocks.
igneous
"sima" is the acronym for
siilica and magnesium
The uppermost layer over the earth’s surface is called
Crust
The radius of the earth is ____ km.
6371
Rocks which contain fossils are
Sedimentary rocks