Question : _____ is the process by which rocks are broken down at the Earth's surface into sediments, clay, soils and substances that are dissolved in water.
Option 1: Loess
Option 2: Erosion
Option 3: Weathering
Option 4: Leaching
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Correct Answer: Weathering
Solution : The correct answer is Weathering.
Weathering is the process by which rocks are broken down at the Earth's surface into sediments, clay, soils, and substances that dissolve in water. This natural phenomenon occurs due to various environmental factors, including temperature changes, water, wind and chemical reactions, leading to the gradual disintegration of rocks over time.
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Question : Select the false statement from the given options.
Option 1: Baikal rocks are formed from the dissolved materials that precipitate from the solution
Option 2: The sedimentary rocks are formed by the deposition and subsequent cementation of that material within bodies of water and at the surface of the earth
Option 3: Metamorphic rocks may be formed simply by being deep beneath the Earth’s surface, subjected to high temperatures and the great pressure of the rock layers above it
Option 4: Igneous rock is formed through the cooling and solidification of magma or lava
Question : Mushroom rocks are formed due to _____.
Option 1: glacial deposition
Option 2: deposition of sea waves
Option 3: running water erosion
Option 4: wind erosion
Question : The breaking up and decay of exposed rocks by temperature changes, frost action, plants, animals and human activity is called:
Option 1: Smelting
Option 4: Deforestation
Question : Which type of rainfall occurs when the heated air from the Earth's surface rises upwards along with the water vapour and gets condensed when it reaches a higher altitude?
Option 1: Cyclonic rainfall
Option 2: Elusive rainfall
Option 3: Convectional rainfall
Option 4: Random rainfall
Question : What is the percentage of expansion (coverage) of continents on the Earth's surface?
Option 1: 24 - 25%
Option 2: 29 - 30%
Option 3: 33 - 34%
Option 4: 42 - 43%
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