Tag: earth and structure

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Questions Related to earth and structure

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

Layer of gases around the earth is called __________.

  1. lithosphere

  2. hydrosphere

  3. atmosphere

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

C. Atmosphere

The thin layer of gases surrounding the earth is called the atmosphere. Earth's atmosphere is separated into five layers known as the troposphere, stratosphere, mesosphere, ionosphere and exosphere.

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

Top most layer of the soil is called _________.

  1. top soil

  2. core

  3. silt

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

The topmost layer of the soil is called topsoil. This layer is usually fairly loose, porous, dark and rich in humus. The humus is derived from decomposed and partly decomposed organic matters of plant and animal origin in the soil. It plays important role in maintaining the fertility of the soil.

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

A period of the earth's geological history, about 55 million years old, is called __________.

  1. The primary age

  2. The secondary age

  3. The tertiary age

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

In the earth's ecological history time period which is about 55 million years old was called the primary age.

It is estimated that during this period only the climate event started. during this time configuration of oceans and continents was also different.

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

Atmosphere of the earth is held by _____________.

  1. Frictional force

  2. Reaction force

  3. Electromagnetic force

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

D.  Gravitational Force

Earth's atmosphere is the layer of gases around the Earth. The atmosphere is held in place by Earth's gravity. It is made up of nitrogen (78.1%) and oxygen (20.9%), with small amounts of argon (0.9%), carbon dioxide (0.035%), water vapor, and other gases. The atmosphere protects life on Earth by absorbing (taking) ultraviolet rays from the sun. It makes our days cooler and our nights warmer.

Solid particulates, including ash, dust, volcanic ash, etc. are small parts of atmosphere. They are important in making clouds and fog.

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

The term that best describes the shape of the earth is _____________.

  1. Ellipse

  2. Geoid

  3. Globe

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

Because the Earth rotates, it bulges at the equator and is flattened at the poles. The term 'geoid' describes this specific shape, which represents the Earth's gravitational equipotential surface.

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

The uppermost layer over the earth's surface is called the ____________.

  1. Crust

  2. Mantle

  3. Outer core

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

The three main layers of Earth include the crust (1 percent of Earth's volume), the mantle (84 percent), and the core (inner and outer combined, 15 percent). The outermost of all these three is the crust. 

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

Which of the following statement is correct?

  1. The crust is thicker in the oceans than the continents

  2. The crust is thinner in the continents than on the ocean floors

  3. The crust is thinner in the ocean floors than the continents

  4. The crust is thicker in the continents than in the ocean floors
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • The average thickness of earth crust at ocean floors- 8 km 
  • The average thickness of earth crust at continents- 32 km
  • Thus the earth crust is thicker at continents as compared to oceans floors.
Multiple choice components of earth geography inside our earth the earth's structure structure of the earth our world earth and structure

 Mohorovicic discontinuity is the boundary between ________ and _________.

  1. crust and core

  2. mantle and core

  3. crust and mantle

  4. none of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The Mohorovicic Discontinuity, or Moho is the boundary between the crust and the mantle. This boundary is located at approximately 2891 km depth beneath the Earth's surface. The boundary is observed via the discontinuity in seismic wave velocities at that depth. This discontinuity is due to the differences between the acoustic impedances of the solid mantle and the molten outer core.