886. Which are the most common metamorphic rocks? Schist, marble, slate, quartzite, gneiss, phyllite, serpent-serpentinite, eclogite & amphibolite
887. The most rocks on the surface of the Earth is composed of which type of rocks?
Sedimentary rocks
888. What are the most common sedimentary rocks?
Chalk, coal, gypsum, clay stone, limestone, dolomite, mudstone, shale, breccia, chert, siltstone
889. The core constitutes nearly-----percent of Earth's volume?
15%
890. What is the name of the discontinuity between the upper core & lower core?
Lehmann discontinuity
891. ---------- is sometimes used to refer the core of the Earth or sometimes the whole interior
Barysphere
892. Which type of rock is known as 'the Mother of all rocks'?
The igneous rocks
893. Which type of rocks are generally the hardest & heaviest of all rocks?
Igneous rocks
894. Which type of rocks are formed from the cooling of magma & often has large crystals?
lngneous rocks
895. Which is the only rock that floats in water?
Pumice
896. Which rock is also known as 'the foam of the Sea'?
Pumice
897. What type of a rock is pumice?
Volcanic rock
898. The igneous rocks formed at some depth in the Earth's crust is known as-------
Plutonic rocks
899. Which type of igneous rock is granite?
Plutonic rock
900. Which type of igneous rock is basalt?
Volcanic rock
901. Which type of rocks are also known as stratified rocks?
Sedimentary rocks
902. Which type of rocks often contain fossils of animals, plants & other micro organisms?
Sedimentary rock
903. ---------is an example for the mechanically formed sedimentary rock
Sandstone
904. The peat, lignite & coal are generally known as ...... rocks
Carbonaceous (type of sedimentary rock)
905. The limestone undergo metamorphic changes and forms
Marble
906. Which type of mountains are formed along convergent plate boundaries?
Fold mountains
907. The fold mountains are created through a process called .......
Orogeny
908. Which type of mountains are formed when the large areas are broken & displaced vertically?
Block mountains
909. At the time of the formation of the block mountains, the uplifted blocks are called .......
Horsts
910. In the formation of block mountains, the lowered blocks are called------
Graben
911. The Rhine Valley & the Vosges mountain in Europe are examples of ......
Block mountains
912. Which type of valleys are formed along the fault lines of block mountains?
Rift valleys
913. What is the name of the mountain formed due to volcanic activity?
Volcanic mountain
914. Mount Kilimanjaro & Mount Fujiyama are examples of----
Volcanic mountains
915. Which type of mountains are formed by denudation?
Residual mountains
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