Geography · 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

Multiple choice

Magma is rock that has...

  1. frozen

  2. melted

  3. sublimated

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

Magma is molten rock found beneath the Earth's surface. It is formed when solid rock is heated until it melts.

Multiple choice depletion of water table water a precious resource biology

Which type of floor does not allow rainwater to seep into the ground?

  1. Cemented floor

  2. Marble floor

  3. Limestone floor

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • Limestone is a sedimentary rock composed primarily of calcium carbonate($CaCo _3$) in the form of the mineral calcite.
  • Limestone tiles are made of natural stone, and it's one of the most affordable options if you want to avoid artificial materials for your flooring.
  • Limestone floor does not allow rainwater to seep into the ground because it is low porosity.
  • So, the correct answer is 'Limestone floor'.
Multiple choice polarisation of light polarisation wave optics optics physics

A calcite crystal is placed over a dot on a piece of paper and rotated. On seeing through the calcite, one will see : 

  1. One dot

  2. Two stationary dots

  3. Two rotating dots

  4. One dot rotating about the other
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

calcite crystal display an optical property called birefringence. This causes objects viewed through a clear piece of calcite to appear doubled.
This is the reason one will see one dot rotating about the other.

Multiple choice polarisation of light polarisation wave optics optics physics

A calcite crystal is placed over a dot on a piece of paper and rotated. On viewing through calcite, one will see

  1. a single dot.

  2. two stationary dots.

  3. two rotating dots.

  4. one dot rotating about the other.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A dot which is shifted by some distance is appeared due to normal incidence and another dot is appeared which is rotating along with the crystal, when we see at a angle to the normal.
Hence option $D$ is correct .

Multiple choice

Which of these is NOT a state of a volcano?

  1. Active

  2. Dormant

  3. Extinct

  4. Non-Active

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Volcanoes are scientifically classified as active, dormant, or extinct based on their eruption history and potential. Non-active is not a standard geological term used to describe a volcano's state.

Multiple choice

What is another word for a vent in a volcano?

  1. conduit

  2. pipe

  3. passage

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

A conduit is the primary pipe or channel through which magma travels from the magma chamber to the surface. While pipe is sometimes used colloquially, conduit is the precise geological term.

Multiple choice

Which of these are NOT parts of a Volcano?

  1. Crater

  2. Vent

  3. Sill

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

Craters, vents, and sills are all recognized geological features or structures associated with volcanoes. A lump is not a recognized geological term for a part of a volcano.

Multiple choice

What creates craters?

  1. rockets

  2. meteoroids
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Craters on the moon are primarily formed by the impact of meteoroids, asteroids, and comets hitting the surface.