geomorphology & earth landforms section 6 MCQ Questions & Answers Detailed Explanation

Answer: (c)

Answer: (c)

1. Basalt is having 45%-52%
2. Granite is having 69%-77%
3. Andesite is having 57%-63%
4. Rhyolite is having 69%-75% of silica conflict respectively.

Answer: (c)

Answer: (b)

1. Granite is a common type of intrusive, felsic, igneous rock that is granular and phaneritic in texture. This rock consists mainly of quartz, mica, and feldspar.
2. Sedimentary rocks are formed by burial, compression and chemical modification of deposited weathered rock debris or sediments at the Earth’s surface. Clay and sandstone are examples of sedimentary rocks.
3. Metamorphic rocks have been modified by heat, pressure and chemical process usually while buried deep below Earth’s surface. Exposure to these extreme conditions has altered the mineralogy, texture and chemical composition of the rocks. Slate is an example of metamorphic rock.

Answer: (d)

Fossils are found only in the sedimentary rocks or the metamorphic rocks made from the sedimentaries. Granite is an igneous rock and hence contains no fossils.

Answer: (a)

Plains can be defined as flat areas with low height (below 500 ft).

Plains are of many types eg. weathered Plains, Loess Plains, Karst Plains, Erosional Plains, Glacial Plains, Desert Plains, Depositional Plains.