Tag: rocks and rock cycle

Quizzes (6) Questions (66)

Questions Related to rocks and rock cycle

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

Contact metamorphism generally occurs near_____.

  1. igneous intrusions

  2. sediment extrusions

  3. igneous extrusions

  4. sediment intrusions
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Contact metamorphism is a type of metamorphism where the texture of rock minerals are changed by means of heat, due to contact with magma, which is generally an igneous intrusion, i.e; the formed magma is trapped beneath the Earth's surface.

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

Which one of the following statements is NOT correct?

  1. Black cotton soil of north-west India was formed by the weathering of basaltic lava rocks

  2. Sedimentary rocks are distinguished from other types of rocks by the presence of distinct layers

  3. Granite has large crystals of quartz, feldspar and mica in it

  4. A metamorphic rock is softer and less compact than its original type
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Metamorphic rocks are formed by the transformation of existing rocks under intense heat and pressure. This process typically makes them more compact and harder than their original parent rocks, not softer.

Multiple choice geography plate tectonics lithosphere and asthenosphere rocks and rock cycle rocks and rock types

Igneous rocks that have the lowest content of silica are known as______

  1. felsic rocks

  2. porphyry

  3. mafic rocks

  4. ultramafic rocks
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ultramafic rocks are the igneous rocks that have the lowest content of silica.


Felsic rocks- rich in feldspar and silicon (igneous rock).

Porphyry- igneous rock having feldspar & quartz crystals.
Mafic rocks- igneous rocks rich in magnesium and iron.

Thus the answer is Ultramafic rocks.

Multiple choice geography plate tectonics lithosphere and asthenosphere rocks and rock cycle rocks and rock types

The volcanoes which are not active now but have the possibility of eruption in the future are known as ______________.

  1. Composite volcanoes

  2. Dormant volcanoes

  3. Extinct volcanoes

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

Dormant volcanoes are those that are not currently erupting but have erupted in the past and are expected to erupt again in the future.