Tag: rocks - introduction and importance

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Multiple choice geography rocks and rock cycle rock cycle and uses of rocks rocks - introduction and importance lithosphere and asthenosphere

Rock salt and gypsum are ___________ formed sedimentary rocks.

  1. Chemically

  2. Mechanically

  3. Physically

  4. All of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Chemical sedimentary rocks are formed by the precipitation of minerals from water. Precipitation is when dissolved materials come out of water. They are typically made up of the minerals halite (calcium chloride, or rock salt) and gypsum (calcium sulfate).

Multiple choice geography rocks and rock cycle rock cycle and uses of rocks rocks - introduction and importance lithosphere and asthenosphere

Gold, petroleum and coal are examples of ____________.

  1. Rocks

  2. Minerals

  3. Fossils

  4. Liquid
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

B. Minerals

Native gold is an element and a mineral. It is highly prized by people because of its attractive color, resistance to tarnish, and its many special properties - some of which are unique to gold. Its rarity, usefulness, and desirability make it command a high price. 

The term mineral is sometimes used in reference to natural earth (non-living) resources, and thus, in a non-scientific sense, petroleum resources are mineral resources and deposits of petroleum are often called mineral deposits. Coal, sands, gravel, and such would also be considered a mineral resource in this particular usage, even though coal is a rock, not a mineral, and the others are mixes of multiple minerals and/or rocks and not, strictly speaking, minerals.

Multiple choice geography rocks and rock cycle rock cycle and uses of rocks rocks - introduction and importance lithosphere and asthenosphere

Where are mushroom rocks formed?

  1. Deserts

  2. River valleys

  3. Glaciers

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mushroom rocks are formed in deserts. It is an erosional landform of arid regions. The mushroom rocks have a broad upper part and narrow base resembling an umbrella. The erosive power of wind is very high at a certain height from the ground level. The resistant rocks take the shape of a mushroom having large top and a small neck.

Multiple choice geography rocks and rock cycle rock cycle and uses of rocks rocks - introduction and importance lithosphere and asthenosphere

Which of the following rock is formed from molten lava?

  1. Igneous rock

  2. Sedimentary rock

  3. Metamorphic rock

  4. Sand stone
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Igneous rocks are formed through the cooling and solidification of magma or lava. The magma can be derived from partial melts of existing rocks in either a planet's mantle or crust. Igneous rocks occur in a wide range of geological settings: shields, platforms, extended crust, basins, and oceanic crust.

Multiple choice geography rocks and rock cycle rock cycle and uses of rocks rocks - introduction and importance lithosphere and asthenosphere

The Maharashtra plateau and the Sahyadris are formed from which rock?

  1. Metamorphic rocks

  2. Igneous rocks

  3. Sedimentary rocks

  4. Lime stone
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Deccan Traps, which include the Maharashtra plateau and the Sahyadris, were formed by massive volcanic eruptions, resulting in igneous rock (specifically basalt).

Multiple choice geography rocks and rock cycle rock cycle and uses of rocks rocks - introduction and importance lithosphere and asthenosphere

Which rock is also called the primary rock?

  1. Igneous rock

  2. Metamorphic rock

  3. Sedimentary rock

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Igneous rocks are known as primary rocks as they are formed through the cooling and solidification of magma or lava. The magma can be derived from partial melts of existing rocks in either a planet's mantle or crust.

All other rocks are derived from them, so they are also called as parent rock.

Multiple choice geography rocks and rock cycle rock cycle and uses of rocks rocks - introduction and importance lithosphere and asthenosphere

Choose the correct answer form the alternatives given.
Which of the following mountains has oldest rocks in India ?

  1. Aravalli's

  2. Himalayas

  3. Diwalis

  4. None
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Aravalli  range are the oldest fold mountains in India. The northern end of range continues as isolated hills and rocky ridges into Haryana state, ending in Delhi. The famous Delhi Ridge is the last leg of the Aravalli Range, which traverses through  South Delhi and terminates into Central Delhi
where Raisina hill is its last extension. It is one of the world's oldest mountain ranges. 

Multiple choice geography rocks and rock cycle rock cycle and uses of rocks rocks - introduction and importance lithosphere and asthenosphere

The rocks on which the soils are formed consist of stones, clay and sand particles. It is known as Regolith, in the beginning of which, ________ was/were there.

  1. Only minerals

  2. Air

  3. Organic substances

  4. Water
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Regolith is a region of loose unconsolidated rock and dust that sits atop a layer of bedrock. On Earth, regolith also includes soil. It includes dust, soil, broken rock, and other related materials. It is present on Earth, the Moon, Mars, some asteroids, and other terrestrial planets and moons.