geomorphology & earth landforms section 2 MCQ Questions & Answers Detailed Explanation
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The following question based on Geomorphology & Earth landforms topic of indian geography mcq
(a) Marble
(b) Limestone
(c) Slate
(d) Granite
The correct answers to the above question in:
Answer: (d)
Igneous rock (derived from the Latin word ignis meaning fire) is one of the three main rock types, the others being a sedimentary and metamorphic rock.
Igneous rock is formed through the cooling and solidification of magma or lava. Igneous rock may form with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.
This magma can be derived from partial melts of pre-existing rocks in either a planet’s mantle or crust. Typically, the melting is caused by one or more of three processes: an increase in temperature, a decrease in pressure, or a change in composition.
Granite is the best-known igneous rock. Many people recognize granite because it is the most common igneous rock found on Earth’s surface and because granite is used to make many objects that we encounter in daily life.
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Read more geomorphology earth landforms Based Indian Geography Questions and Answers
Question : 1
A landscape which is caused due to the fissure in the earth along which one side has moved down with reference to the other is known as
a) V Shaped Valley
b) Rift Valley
c) Hanging ValleY
d) U Shaped Valley
Answer »Answer: (b)
A rift valley is a linear-shaped lowland caused due to the fissure in the earth along which one side moves down with reference to the other. It is commonly seen between several highlands or mountain ranges created by the action of a geologic rift or fault.
A rift valley is formed on a divergent plate boundary, a crustal extension, a spreading apart of the surface.
Question : 2
Consider the following statements:
- The large supercontinent that existed 200 million years ago when all of the continents were together was called Pangaea.
- Mount St. Helen’s a part of the Cascade Range of volcanoes, result from the subduction of the Juan de Fuca plate.
- The Andes Mountains of South America are a result of divergent plate boundary.
a) 1, 2 and 3
b) 1 and 2
c) None
d) 2 only
Answer »Answer: (b)
The Andes Mountains of South America are a result of a convergent plate boundary, also known as a destructive plate boundary.
It is an actively deforming region where two tectonic plates or fragments of the lithosphere move toward one another and collide.
Question : 3
Consider the following statements.
- Tropical deserts in the world are found in the trade wind bands of Western ends of Continents.
- In India, Eastern Himalayan region receives more rain from North-Eastern winds.
a) Both 1 and 2
b) Only 1
c) Neither 1 nor 2
d) Only 2
Answer »Answer: (b)
Question : 4
Which one of the following is an igneous rock?
a) Quartzite
b) Sandstone
c) GranitE
d) Shale
Answer »Answer: (c)
Igneous rock is one of the three main rock types, the others being a sedimentary and metamorphic rock. In terms of modes of occurrence, igneous rocks can be either intrusive (plutonic), extrusive (volcanic) or hypabyssal.
Granite is an intrusive igneous rock that is formed from magma that cools and solidifies within the crust of a planet. They form the central cores of major mountain ranges.
Question : 5
On the basis of the shape of rocks and the presence of cracks and joints in rocks, four types of disintegration occur. Choose the one which is wrongly described.
a) Rocks which have developed cracks and joints break off at these cracks. This process is more active on metamorphic rocks. This process is called block separation.
b) Rocks formed of big coarse grains disintegrate into small coarse grains and form bajri and sandgrains are called granular disintegration.
c) In the process of shattering the outer shells of massive and hard rocks are shattered near new joints. In this type of disintegration rocks are broken into come type pieces with sharp edges.
d) Exfoliation is the process in which layers of rock are peeled off in concentric shells like that of an onion. When one after another layer is peeled off a dome like shell is left over.
Answer »Answer: (a)
Block separation:
Rocks that have developed cracks and joints break off at these cracks. This process is more active on sedimentary rocks. In the case of sedimentary rock, cracks occur near the surface of the earth and rocks disintegrate into almost rectangular pieces.
Question : 6
Which one of the following is not an old folded mountain?
a) Andes mountain
b) Ural mountain
c) Appalachian mountain
d) Aravalli mountain
Answer »Answer: (a)
GET Geomorphology & Earth landforms PRACTICE TEST EXERCISES
geomorphology & earth landforms section 1
geomorphology & earth landforms section 2
geomorphology & earth landforms section 3
geomorphology & earth landforms section 4
geomorphology & earth landforms section 5
geomorphology & earth landforms section 6
geomorphology & earth landforms section 7
geomorphology & earth landforms section 8
geomorphology & earth landforms section 9
geomorphology & earth landforms section 10
Geomorphology & Earth landforms Shortcuts and Techniques with Examples
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