Geography ยท 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 type of weathering involves the breakdown of rocks by the action of acids?

  1. Mechanical weathering

  2. Chemical weathering

  3. Biological weathering

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

Chemical weathering is the process by which rocks are broken down by the action of acids, such as carbonic acid and nitric acid, which dissolve minerals in the rock.

Multiple choice

Which type of weathering involves the breakdown of rocks by the action of plants?

  1. Mechanical weathering

  2. Chemical weathering

  3. Biological weathering

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

Biological weathering is the process by which rocks are broken down by the action of plants, which release acids that dissolve minerals in the rock.

Multiple choice

Which type of weathering involves the breakdown of rocks by the action of microorganisms?

  1. Mechanical weathering

  2. Chemical weathering

  3. Biological weathering

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

Biological weathering is the process by which rocks are broken down by the action of microorganisms, such as bacteria and fungi, which release acids that dissolve minerals in the rock.

Multiple choice

Which type of weathering involves the breakdown of rocks by the action of gravity?

  1. Mechanical weathering

  2. Chemical weathering

  3. Biological weathering

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

Mechanical weathering is the process by which rocks are broken down into smaller pieces by the action of gravity, such as landslides and rockfalls.

Multiple choice

Aquifers are typically composed of sand, gravel, or fractured rock. True or False?

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Aquifers are typically composed of sand, gravel, or fractured rock, which have high porosity and permeability, allowing for the storage and movement of groundwater.

Multiple choice

What is the primary composition of asteroids?

  1. Rock and metal

  2. Ice and dust

  3. Gas and plasma

  4. Water and organic compounds
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Asteroids are primarily composed of rock and metal, with varying proportions of silicates, metals, and other minerals.

Multiple choice

What is the most common type of rock on the Moon?

  1. Basalt

  2. Granite

  3. Sandstone

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

Basalt is the most common type of rock on the Moon, formed from the cooling of lava flows.

Multiple choice

What is the term used to describe a rock unit that is younger than the underlying rock unit but older than the overlying rock unit?

  1. Interbed

  2. Layer

  3. Stratum

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

An interbed is a rock unit that is sandwiched between two other rock units of different ages.

Multiple choice

What is the term used to describe a rock unit that is composed of fragments of pre-existing rocks?

  1. Igneous rock

  2. Sedimentary rock

  3. Metamorphic rock

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

Sedimentary rocks are formed from the accumulation and consolidation of sediment, which can be derived from pre-existing rocks, organic matter, or chemical precipitation.

Multiple choice

What is the term used to describe a rock unit that is formed from the cooling and solidification of molten rock?

  1. Sedimentary rock

  2. Metamorphic rock

  3. Igneous rock

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

Igneous rocks are formed from the cooling and solidification of molten rock, either at the Earth's surface (extrusive) or within the Earth's crust (intrusive).

Multiple choice

Which type of geological map shows the distribution of mineral deposits?

  1. Geologic map

  2. Mineral resource map

  3. Geomorphic map

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

A mineral resource map is a specialized map that portrays the distribution and characteristics of mineral deposits, including their location, type, and economic significance.

Multiple choice

What is the term used to describe a rock unit that is formed from the alteration of pre-existing rocks by heat, pressure, or chemical reactions?

  1. Sedimentary rock

  2. Metamorphic rock

  3. Igneous rock

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

Metamorphic rocks are formed from the alteration of pre-existing rocks by heat, pressure, or chemical reactions, resulting in the formation of new minerals and textures.

Multiple choice

What is the composition of Kuiper Belt objects?

  1. Primarily rock and metal

  2. Primarily ice and rock

  3. Primarily gas and dust

  4. Primarily water and carbon dioxide
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Kuiper Belt objects are composed primarily of ice and rock, with varying amounts of other materials such as methane, ammonia, and carbon monoxide.

Multiple choice

What is the term for a rock that is formed from the cooling and solidification of molten rock?

  1. Igneous rock

  2. Sedimentary rock

  3. Metamorphic rock

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

Igneous rocks are formed when molten rock (magma or lava) cools and solidifies, either above or below the Earth's surface.

Multiple choice

Which of the following is NOT a type of sedimentary rock?

  1. Sandstone

  2. Limestone

  3. Granite

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

Granite is an igneous rock, not a sedimentary rock. Sedimentary rocks are formed from the accumulation and compaction of sediments, such as sand, mud, and organic matter.