Tag: introduction to rocks, volcanoes and earthquakes

Questions Related to introduction to rocks, volcanoes and earthquakes

What type of rock is marble?

geography rocks and rock cycle lithosphere and asthenosphere rocks and rock types introduction to rocks, volcanoes and earthquakes

  1. Volcanic

  2. Metamorphic

  3. Plutonic

  4. Sedimentary

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Correct Option: B
Explanation:
  • Marble is formed when limestone is subjected to intense heat and pressure leading to its metamorphism i.e. change in form. Hence marble is called a metamorphic rock

Primary rocks of thermal origin are _________.

geography rocks and rock cycle lithosphere and asthenosphere rocks and rock types introduction to rocks, volcanoes and earthquakes

  1. Metamorphic rocks

  2. Sedimentary rocks

  3. Igneous rocks

  4. None of these

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Correct Option: C
Explanation:

Igneous rocks are called as primary rocks because they originate during the formation of upper crust of the earth on cooling, solidification and crystallization of hot and liquid magmas after the origin of the earth. 

Which of the following rocks is different from the remaining three on the basis of its mode of origin ?

geography rocks and rock cycle lithosphere and asthenosphere rocks and rock types introduction to rocks, volcanoes and earthquakes

  1. Limestone

  2. Sandstone

  3. Shale

  4. Marble

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Correct Option: D
Explanation:

Limestone, Sandstone, and Shale are examples of sedimentary rocks but Marble is an example of metamorphic rock. 

Sedimentary Rocks - These rocks are formed by the accumulation or deposition of small particles and subsequent cementation of minerals or organic particles on the floor of oceans or other bodies of water at the Earth's surface.
Metamorphic rocks - When the physical and chemical properties of the existing rocks get changed due to high heat and pressure, then metamorphic rocks are formed. Marble, slate are examples of metamorphic rocks.

Molten rock below the surface of the earth is called_____________.

geography rocks and rock cycle lithosphere and asthenosphere rocks and rock types introduction to rocks, volcanoes and earthquakes

  1. Basalt

  2. Laccolith

  3. Lava

  4. Magma

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Correct Option: D

Rocks formed by the cooling of the hot masses of the earth or solidification of molten matter are called _______________.

geography rocks and rock cycle lithosphere and asthenosphere rocks and rock types introduction to rocks, volcanoes and earthquakes

  1. Hard rocks

  2. Igneous rocks

  3. Volcanic rocks

  4. Aqueous rocks

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Correct Option: B
Explanation:
  • Igneous rocks are the rocks that are formed by the cooling of hot masses or by the solidification of molten matter, hence option B is correct.
  • Hard rock is any rock that is hard. It is a very general term.
  • Aqueous rocks are the rocks deposited by the water and they get formed in layers or strata.
  • Volcanic rocks are the rocks coming out of the volcanic eruption which are mostly of igneous origin but as already the specific option of Igneous rocks is provided, option D is not the most suitable answer.

Rocks formed by the loose and broken fragments of the pre-existing rocks are called __________________.

geography rocks and rock cycle lithosphere and asthenosphere rocks and rock types introduction to rocks, volcanoes and earthquakes

  1. Sedimentary rocks

  2. Organic rocks

  3. Soft rocks

  4. Volcanic rocks

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Correct Option: A
Explanation:
  • When any rock gets broken it eventually gets eroded and transported to a different place where it settles down in layers. When many layers of such broken materials are piled up and take the form of a rock then it is called a sedimentary rock, hence option A is correct.
  • Soft rock is a general term for any soft rock.
  • Organic rock is a sedimentary rock which has high organic carbon.

Which of the following is not a metamorphic rock?

geography rocks and rock cycle lithosphere and asthenosphere rocks and rock types introduction to rocks, volcanoes and earthquakes

  1. Marble

  2. Granite

  3. Slate

  4. Quartze

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Correct Option: B
Explanation:
  • Marble, Slate and quartz are formed after metamorphism ie change in their original form due to extreme temperatures and pressure.
  • Granite is an igneous rock, thus option B is correct.

If a rock were formed from molten magma, what type of rock is it?

geography rocks and rock cycle lithosphere and asthenosphere rocks and rock types introduction to rocks, volcanoes and earthquakes

  1. Igneous

  2. Sedimentary

  3. Metamorphic

  4. none of the above

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Correct Option: A
Explanation:

Igneous rocks are formed during the formation of the upper crust of the earth on cooling, solidification, and crystallization of hot and liquid magmas after the origin of the earth. Igneous rocks are mostly associated with the volcanic activities and igneous rocks are generally found in the volcanic zones.

Identify the following igneous rock. It has fine grain size and is extrusive.

geography rocks and rock cycle lithosphere and asthenosphere rocks and rock types introduction to rocks, volcanoes and earthquakes

  1. Granite

  2. Pumice

  3. Both a and b

  4. None of the above

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Correct Option: D
Explanation:

None of the above


Extrusive igneous rocks erupt onto the surface, where they cool quickly to form small crystals. Some cool so quickly that they form an amorphous glass. These rocks include andesite, basalt, obsidian, pumice, rhyolite, scoria, and tuff.

Andesite is a fine-grained, extrusive igneous rock composed mainly of plagioclase with other minerals such as hornblende, pyroxene, and biotite.

Rocks like sandstone which allow water to seep through readily are called ______________.

geography rocks and rock cycle lithosphere and asthenosphere rocks and rock types introduction to rocks, volcanoes and earthquakes

  1. Permeable rocks

  2. Sedimentary rocks

  3. Metamorphic rocks

  4. Mushroom rocks

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Correct Option: A
Explanation:
  • Permeable rocks are the rocks having interconnected pores which allow the water to seep through them. Hence option A is correct.
  • Sedimentary rocks and metamorphic rocks are a  broad classification of rocks.
  • Mushroom rocks derive their name out of their shape.