Geography · General Awareness

Geology and Earth Structure

1,345 Questions

Geology and Earth Structure explores the physical composition of the planet, including its layers, tectonic plates, and seismic activity. This topic is a core component of geography and general science sections in various competitive exams. Reviewing these concepts builds a solid foundation for answering questions related to natural phenomena.

Layers of the EarthTectonic PlatesEarthquakes and VolcanoesGeomagnetism ApplicationsGeophysical MethodsLandform Formation

Geology and Earth Structure Questions

Multiple choice
  1. a - 3, b - 2, c - 1

  2. a - 2, b - 1, c - 3

  3. a - 2, b - 3, c - 1

  4. a - 3, b - 1, c - 2

  5. a - 1, b - 3, c - 2

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct option. The core is the central region of the Earth extending from fourteen hundred to eighteen hundred miles from the Earth's center. The mantle is the central region of the Earth consisting of hot, dense, semisolid rocks and is about 2,900 kilometers thick. The crust is the outermost solid shell of the Earth containing all life.

Multiple choice
  1. Throw

  2. Tear

  3. Heave

  4. Strike

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In fault geology, 'throw' is the vertical displacement component, while 'heave' is the horizontal displacement component. 'Strike' refers to the orientation/direction of the fault line. 'Tear' is not a standard geological term. For normal faults, heave specifically measures horizontal movement.

Multiple choice
  1. lakes, rivers and wells

  2. islands, peninsulas and bays

  3. mountains, plateaus and plains

  4. None of these

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The three major relief features (landforms) of the Earth's surface are mountains, plateaus, and plains. Mountains are elevated landforms with steep slopes, plateaus are flat-topped elevated areas, and plains are low-lying flat areas. Together they constitute the basic building blocks of Earth's topography.

Multiple choice
  1. a only

  2. b only

  3. c only

  4. All of the above

  5. None of the above

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is incorrect as all are correct statements. This is the correct answer choice as none of the given statements are incorrect. They are all true statements.

Multiple choice
  1. a only

  2. b only

  3. c only

  4. b and c

  5. a, b and c

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The floors of the oceans are rugged with the world’s largest mountain ranges, deepest trenches and the largest plains. These features are formed like those of the continents, by the factors of tectonic, volcanic and depositional processes. Both these statements are correct.

Multiple choice
  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
D Correct answer
Explanation

A mid-oceanic ridge is composed of two chains of mountains separated by a large depression. Iceland is a part of a mid oceanic ridge. Both these statements are correct.

Multiple choice
  1. A. G. Wegener

  2. Vidal de la Blache

  3. Hary Hess

  4. W. M. Davis

  5. Ptolemy

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct answer. He propounded it in 1960, which further validated the hypothesis of continental drift.

Multiple choice
  1. velocity of wind

  2. depth of an ocean

  3. velocity of earth's rotation

  4. intensity of an earthquake

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The Richter scale, developed by Charles Richter in 1935, measures the magnitude (intensity) of earthquakes based on seismic wave amplitude recorded by seismographs. It's logarithmic - each whole number increase represents 10 times greater amplitude and about 31.6 times more energy release.

Multiple choice
  1. Lithosphere

  2. Mesosphere

  3. Asthenosphere

  4. Barysphere

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The Earth's innermost layer is the Core (also called Barysphere in older literature). It consists of a solid inner core and liquid outer core, primarily composed of iron and nickel. The Lithosphere is the rigid outer layer, while Asthenosphere is the ductile layer beneath it.

Multiple choice
  1. 15

  2. 17

  3. 18

  4. 14

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Carbon is the 17th most abundant element in Earth's crust, comprising approximately 0.02% by mass. This makes it relatively rare compared to major elements like oxygen, silicon, aluminum, and iron, but more abundant than many trace elements.