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

Which of the following statements is/are correct?

a. In sedimentary rocks, minerals may occur in cracks, crevices, faults or joints. b. The smaller occurrences are called veins and the larger are called lodes. c. Major metallic minerals like tin, copper, zinc, lead, etc. are obtained from veins and lodes.

  1. a only

  2. b only

  3. c only

  4. a and b

  5. b and c
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This is the correct answer as both these statements are correct.

Multiple choice

Which of the following statements is/are correct?

a. Mica is made up of a series of plates or leaves. It splits easily into thin sheets. b. Its deposits are found in the northern edge of the Chota Nagpur plateau. Koderma Gaya – Hazaribagh belt of Jharkhand is the leading producer. c. Mica has excellent dielectric strength, low power loss factor, insulating properties and resistance to high voltage.

  1. a and b

  2. b and c

  3. a and c

  4. a, b and c

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

This is the correct answer as these statements are correct.

Multiple choice

Regarding the earth's composition it would not be true to say which of the following I. The crust is composed of different types of rocks. II. The central nucleus is fluid. III. Below the crust the material is totally solid.

  1. III

  2. I and III

  3. II and III

  4. All are right
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Statement III is false because the mantle, which lies below the crust, is composed of solid rock that behaves plastically over geological time, not totally solid in the sense of being rigid throughout, but certainly not liquid. Statement II is also technically debated as the outer core is liquid, but III is the most clearly incorrect statement in standard geological contexts.

Multiple choice

The most important determinant of resistance of rocks to weathering is rock

  1. jointing

  2. permeability

  3. softness

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

In geology the term joint refers to a fracture in rock where the displacement associated with the opening of the fracture is greater than the displacement due to lateral movement in the plane of the fracture (up, down or sideways) of one side relative to the other.

Multiple choice

Magma that reaches earth's surface and then solidifies is called

  1. granite

  2. argilite

  3. quartz

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

The molten rock material that originates under the Earth's crustand forms igneous rock when it has cooled. When magma cools and solidifies beneath the Earth's surface, it forms what are known as intrusive rocks. When it reaches the Earth's surface, itflows out as lava and forms extrusive (or volcanic) rocks.

Multiple choice

Which of these refers to the carvings into a rock?

  1. Petroglyphs

  2. Pictogram

  3. Ideograms

  4. Logogram

  5. Whittling
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Petroglyphs refers to the carvings into a rock surface. Petroglyphs (also called rock engravings) are pictogram and logogram images created by removing part of a rock surface by incising, picking, carving and abrading.

Multiple choice

What is underground layer of water-bearing permeable rock called?

  1. Cistern

  2. Stepwells

  3. Aquifer

  4. Groundwater models

  5. Hydraulic tomography
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

An aquifer is an underground layer of water-bearing permeable rock or unconsolidated materials (gravel, sand, or silt) from which groundwater can be extracted using a water well.

Multiple choice

Fossils are commonly found in

  1. Igneous rocks

  2. Metamorphic rocks

  3. Sedimentary rocks

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

Fossils are commonly found  in Sedimentary rocks.