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

Put all the above giving sequence in a correct order?

Temperature changes can weather rocks.
Following are the some steps of weathering of rocks.
(1) rock expands
(2) rock cools down
(3) rock layers crack
(4) rock heats up
(5) rock contracts

  1. (5) (3) (1) (2) (4)

  2. (3) (2) (1) (4) (5)

  3. (1) (2) (4) (5) (3)

  4. (4) (1) (3) (2) (5)

  5. (2) (3) (4) (1) (5)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

first rock heats up, then expand due to heat, crack, cools down and after cooling contract

Multiple choice

Which of the following sequence most closely describes the process of formation of igneous rocks from metamorphic rocks?

  1. weathering, erosion, transportation, deposition, burial, pressure, cementation

  2. burial, melting, cooling

  3. weathering, erosion, burial, melting, cooling

  4. may involve burial first, heat and/or pressure, recrystallisation without melting

  5. melting, burial, cooling
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

yes, It is the correct sequence of forming igneous rocks from metamorphic rocks.

Multiple choice

Crystals are formed when molten rocks cool and harden inside the earth.

Directions: Read the following passage and answer the following question.

What are crystals? They are actually minerals that could grow in to a particular shape that they were supposed to be. The shape of a crystal is determined by various factors. We now know that our DNA determines the color of our eyes, how tall we shall get to be and what shape our bones would ultimately take. In the same way it is the chemistry of a mineral, i.e. the chemicals that a mineral is made of, that determines what shape its crystals would ultimately take. Thus it is possible to tell different minerals apart by analyzing the shape of their crystals.
 
Sometimes minerals form in limited spaces where there is very little room, so they don't acquire a proper crystalline shape. When there is just a big hunk of a mineral, we call it a massive mineral. When there is a definite shape with easily observable flat sides or layers, we call it a mineral crystal.

Most of the   crystals found on the earth were formed millions of years ago. Crystals form when rocks in liquid form inside the earth slowly cool and harden under typical conditions.   Crystals also form when liquids beneath the ground find their way into cracks and slowly deposit minerals in due course of time. It takes thousands of years for most mineral crystals to grow” into their usual shapes but a few   salts (like halite) can form so quickly that one can watch them grow at one’s own home!

Many people think that crystals as clear pretty stones that are used for jewelry. Amethyst is a commonly found quartz crystal. Crystals not have to be clear, however, those are the kinds you may usually see in jewelry stores.

 

  1. True

  2. False

  3. Can't say
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The passage directly states that 'crystals form when rocks in liquid form inside the earth slowly cool and harden under typical conditions.' 'Rocks in liquid form' is equivalent to molten rocks, making this statement true.

Multiple choice

Shield volcano is mainly made up of

  1. basalt

  2. salt

  3. mercury and copper

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

Shield volcanoes are built almost exclusively of basalt, a type of volcanic rock that forms from low-viscosity lava flows. This lava can travel long distances before cooling, creating the broad, gently sloping shield shape. Other options are incorrect: salt is not volcanic, mercury and copper are individual metals not found in volcanoes, and gasoline is a refined petroleum product.

Multiple choice

Which of the following sets represents orthosilicates only?

  1. Thortveitite, Phenacite, Willemite

  2. Benitoite, Beryl, Phenacite

  3. Willemite, Zircone, Kaolinite

  4. Phenacite, Willemite, Zircone

  5. Beryl, Thortveitite, Kaolinite
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Phenacite - Be2SiO4 : Orthosilicate Willemite - Zn2SiO4 : Orthosilicate Zircone - ZrSiO4 : Orthosilicate

Multiple choice

What is the study of the general physical characteristics of rocks called?

  1. Demography

  2. Geography

  3. Geology

  4. Lithology

  5. Geophysics
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

It is the study of the general physical characteristics of rocks. The lithology of a rock unit is a description of its physical characteristics visible at outcrop, in hand or core samples or with low magnification microscopy.