Geography · Science General

Rocks and Earth Materials

1,176 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

Coral reefs are formed by

  1. Volcanic rocks

  2. Marine sediments

  3. Chlorine material precipitated from sea water

  4. Tiny colonial marine animals which construct limestone skeleton material
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

 Coral reefs and atolls are significant sub-marine features. These are formed due to accumulation and compaction of skeletons of lime secreting organisms known as coral polyps.

Multiple choice

What does glass mixture constitute of?

  1. Sand and Salt

  2. Sand and Silicates

  3. Quartz and Mica

  4. Mica and Silicates
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The most familiar and historically the oldest types of glass are "silicate glasses" based on the chemical compound silica (silicon dioxide), the primary constituent of sand. The term glass, in popular usage, is often used to refer only to this type of material, which is familiar from use as window glass and in glass bottles.

Multiple choice

Which of these fits gap 18?

Directions: Complete this passage by selecting the most suitable option for the corresponding gap.
All rocks ______ (17) _______ formed in the same way.
One kind of rock, called “sedimentary rock,” is formed by sediment. Sandstones and lime–stones are _____ (18) _______ sedimentary rocks.
Since they are ______ (19) _______ in layers which are called “strata,” these rocks are called “stratified” rocks.
The tiny particles of which such rocks are made are usually rounded, since the sharp edges and corners ______ (20) _____ worn off while the particles were being rolled along stream beds, washed by the waves, or blown by winds.

  1. called

  2. rare

  3. typical

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

Sandstones and lime-stones are two particular examples of sediment rocks.

Multiple choice

Which of these fits gap 17?

Directions: Complete this passage by selecting the most suitable option for the corresponding gap.
All rocks ______ (17) _______ formed in the same way.
One kind of rock, called “sedimentary rock,” is formed by sediment. Sandstones and lime–stones are _____ (18) _______ sedimentary rocks.
Since they are ______ (19) _______ in layers which are called “strata,” these rocks are called “stratified” rocks.
The tiny particles of which such rocks are made are usually rounded, since the sharp edges and corners ______ (20) _____ worn off while the particles were being rolled along stream beds, washed by the waves, or blown by winds.

  1. weren't

  2. isn't

  3. haven't

  4. aren't
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Rock formation took place in the past.

Multiple choice

Consider the following statements about sedimentary rocks:

  1. Sedimentary rocks are formed at Earth's surface by the hydrological system.
  2. Formation of sedimentary rocks involves the weathering of pre-existing rocks.
  3. Sedimentary rocks contain fossils.
  4. Sedimentary rocks typically occur in layers.

Which of these statements are correct?

  1. 1 and 2

  2. 1 and 4

  3. 2, 3 and 4

  4. 1, 2, 3 and 4
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All the statements are true about sedimentary rocks.

Multiple choice

Quartzite is metamorphosed from

  1. limestone

  2. obsidian

  3. sandstone

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

Quartzite is a metamorphosed rock which was originally a sandstone. It is converted dut to heat and pressure.

Multiple choice

Which one of the following statements is not correctly matched ?

  1. Vindhyan system mostly consists of sandstones, limestones and shale.

  2. Gneiss and schist of archaeans are the oldest rocks in India.

  3. Rocks of Gondwana system are of fluvial or lacustrine origin.

  4. Deccan trap formations were due to volcanic eruption during Oligocene.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The Deccan Trap formations were the result of volcanic eruptions during the late Cretaceous to early Paleocene period, not the Oligocene.

Multiple choice

Which of the following is an igneous rock?

  1. granite

  2. limestone

  3. slate

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

Granite is a classic example of an intrusive igneous rock formed from the cooling of magma. Limestone is sedimentary, while slate and quartzite are metamorphic rocks.

Multiple choice

Of what is Earth's crust made?

  1. rock

  2. oxygen

  3. magma

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

Earth's crust is the outermost solid layer of the planet, composed primarily of various types of rocks and minerals.