Geography ยท Science General
Rocks and Earth Materials
1,291 Questions
Study geographical questions centered around rocks, minerals, and earth materials. The focus is on the formation and identification of igneous, sedimentary, and metamorphic rocks. These earth science topics are commonly tested in civil services and state level examinations.
Igneous rocksSedimentary rocksMetamorphic processEarth materialsGeomorphic symbols
Rocks and Earth Materials Questions
Which type of earth dam is constructed using a combination of earth and rockfill materials?
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Gravity dam
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Arch dam
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Buttress dam
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Zoned earth dam
D
Correct answer
Explanation
Zoned earth dams are constructed using a combination of earth and rockfill materials, with different zones designed to serve specific functions, such as providing stability, drainage, and seepage control.
Which of the following is NOT a type of glacial deposit?
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Till
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Loess
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Outwash
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Drumlins
B
Correct answer
Explanation
Loess is a type of wind-blown sediment, not a glacial deposit. Till, outwash, and drumlins are all types of glacial deposits.
Which of the following is an example of a volcanic landform?
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Lava domes
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Cinder cones
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Shield volcanoes
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Calderas
A
Correct answer
Explanation
Volcanic landforms are those that are formed by the eruption of magma or lava. Lava domes are a type of volcanic landform that is formed by the eruption of viscous lava.
Which of the following is not a type of meteorite?
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Stony
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Iron
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Stony-iron
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Glassy
D
Correct answer
Explanation
Meteorites are classified into three main types: stony, iron, and stony-iron. Glassy meteorites are not a recognized type.
Which of the following is a common landform found on the Earth's surface?
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Mountains
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Valleys
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Rivers
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All of the above
D
Correct answer
Explanation
Mountains, valleys, and rivers are all common landforms found on the Earth's surface. Mountains are elevated areas of land. Valleys are low-lying areas of land between mountains. Rivers are channels of water that flow across the Earth's surface.
What is the tail of a comet composed of?
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Dust and gas
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Rock and ice
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Plasma and radiation
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All of the above
D
Correct answer
Explanation
The tail of a comet is composed of dust, gas, plasma, and radiation, which are expelled from the comet's nucleus as it approaches the Sun.
What is the composition of the nucleus of a comet?
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Rock and ice
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Dust and gas
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Plasma and radiation
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All of the above
A
Correct answer
Explanation
The nucleus of a comet is primarily composed of rock and ice, with varying proportions of dust, gas, and other materials.
What are some of the common types of geologic cross-sections?
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Balanced cross-sections
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Unbalanced cross-sections
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Restored cross-sections
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All of the above
D
Correct answer
Explanation
Some of the common types of geologic cross-sections include balanced cross-sections, unbalanced cross-sections, and restored cross-sections.
Which of the following is NOT a common type of reservoir rock?
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Sandstone
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Limestone
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Igneous rock
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Shale
C
Correct answer
Explanation
Igneous rocks are not typically considered reservoir rocks due to their low porosity and permeability, which hinder the storage and flow of hydrocarbons.
Which marine deposit is formed by the accumulation of sand and gravel in a beach environment?
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Barrier island
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Spit
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Tombolo
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Beach ridge
D
Correct answer
Explanation
Beach ridges are formed by the accumulation of sand and gravel in a beach environment, typically as a result of wave action.
Which type of marine sediment is primarily composed of clay minerals?
C
Correct answer
Explanation
Mud is a type of marine sediment that is primarily composed of clay minerals, along with other fine-grained particles.
Which type of marine sediment is primarily composed of volcanic ash and other volcanic debris?
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Terrigenous sediment
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Biogenic sediment
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Hydrogenous sediment
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Cosmogenic sediment
D
Correct answer
Explanation
Cosmogenic sediment is formed from the accumulation of extraterrestrial material, such as volcanic ash and micrometeorites.
Which type of marine sediment is primarily composed of sand-sized particles?
D
Correct answer
Explanation
Sand is a type of marine sediment that is primarily composed of sand-sized particles, typically ranging from 0.0625 to 2 millimeters in diameter.
What type of cave is formed by the dissolution of limestone by water?
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Lava tube
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Sea cave
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Solutional cave
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Glacial cave
C
Correct answer
Explanation
Solutional caves are the most common type of cave, formed when water dissolves limestone or other soluble rock.
What type of cave is formed by the flow of lava through a volcanic vent?
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Lava tube
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Sea cave
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Solutional cave
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Glacial cave
A
Correct answer
Explanation
Lava tubes are formed when lava flows through a volcanic vent and then cools and hardens, leaving a hollow tube.