Tag: plate tectonics

Quizzes (10) Questions (2)

Questions Related to plate tectonics

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.