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 components of earth geography inside our earth the earth's structure structure of the earth our world earth and structure

Most of the continents are formed of ________ layer.

  1. sima

  2. sial

  3. mantel

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

Most of the continents are formed of SiAl layer, i.e., Silica and Aluminium. The upper layer of the Earth's crust is called lithosphere and has 2 parts- upper part forms continents SiAl has a density of 2.7. The lower part is denser and is called SiMa (Silica, Iron, Magnesium).

Multiple choice components of earth geography inside our earth the earth's structure structure of the earth our world earth and structure

The outer most layer of the earth which is formed of solid rocks is called the ___________.

  1. soil

  2. crust

  3. core

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

The outer most or top most layer of the earth is termed as crust. The crust of the earth is consist of sedimentary and granite rocks. The average density of crust is 2.8 to 3. The outer layer of the earth mainly found under continent. 

Multiple choice geography inside our earth the earth's structure structure of the earth our world components of earth earth and structure

Which one of the following is present in the largest amount in terms of per cent by mass in the earth's crust?

  1. Silicon

  2. Oxygen

  3. Carbon

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

Oxygen is by far the most abundant element in the earth's crust. Scientists estimate oxygen comprises nearly half of the mass of the crust. It also accounts for 21 percent of Earth's atmosphere

Multiple choice evs - i constituents of food minerals in our diets types of nutrients nutrients and deficiency

Stalactites are :

  1. Thin, finger like mineral deposits hanging on the roofs of the caves.

  2. The mineral deposits that are left on the floor of the caves when water evaporates

  3. The mineral deposits found in mines

  4. Pure minerals extracted from the ores.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A stalactile is a type of formation mineral that hangs from the ceilings of caues hot springs and other.

Multiple choice evs - i constituents of food minerals in our diets types of nutrients nutrients and deficiency

Stalactites are:

  1. thin, fingerlike mineral deposits hanging on the roofs of the caves

  2. the mineral deposits that are left on the floor of the caves when water evaporates

  3. the mineral deposits found in mines

  4. pure minerals extracted from the ores
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Stalactites is a type of mineral. It has the following properties. It is layer like mineral, very thin and deposits having finger like shape hanging from caves.

Multiple choice geography mineral resources in rajasthan climate and season cycle climate, soil, natural vegetation and animals of rajasthan study of rocks and soil formation position of rajasthan in indian economy

In the case of most of the aeolian sand, the CaO content varies from ______.

  1. 1.0-1.5 per cent

  2. 8.0-9.8 per cent

  3. 7.6-8.9 per cent

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Aeolian soil is the wind deposited materials that consist primarily of sand or silt-sized particles. These materials tend to be extremely well sorted and free of coarse fragments. CaO content in such soils varies from 1.0-1.5 per cent.

Multiple choice geography external forces - responsible for changes the soil soil erosion (geo) soil erosion, soil conservation and uses of soil

In which type of formation does gypsum occur?

  1. Bed or layers

  2. Veins and lodes

  3. Results of evaporation in deserts

  4. Alluvial or placer deposits
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Gypsum can form anywhere where the right combination of mineral elements occurs and evaporation happens. It occurs as clumps of crystals or in thick beds. Gypsum beds were formed in shallow sea basins. These geologic areas are called evaporation basins because as the climate changed from tropic to arid the water evaporated concentrating the minerals it held. Gypsum formations can also occur in tidal flats along coastlines, in lagoons, deltas, hot springs, volcanic areas, desert water tables and even on plant roots.

Multiple choice geography in the land of kerala introduction to metallurgy occurrence of metals study of kerala

RCC is:

  1. the concrete having an iron framework inside it as a support

  2. the crushed cement in which more gravel is added

  3. prepared by adding calcium chloride to the limestone and calcium silicate

  4. none of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

RCC is Reinforced concrete cement. It is a combination of concrete and steel to build a structure instead of using only concrete. Concrete is good in resisting compression and to gain resisting tension steel is added which has high tensile strength. To overcome the drawback of concrete, reinforced steel bars are used along with concrete.

Multiple choice

Which of the following is NOT an example of convection?

  1. ocean currents

  2. rock in the mantle

  3. ironing clothes

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

Ironing clothes is an example of conduction because the iron must touch the clothes. Ocean currents, mantle movement, and lava lamps are all examples of convection.