Tag: components of earth

Quizzes (0) Questions (143)

Questions Related to components of earth

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

The lower part of the crust known as 'Oceanic Crust' is rich in __________.

  1. Aluminium and copper

  2. Magnesium and aluminium

  3. Copper and gold

  4. Silica and magnesium
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sima is the name for the lower layer of the Earth's crust. This layer is made of rocks rich in magnesium silicate minerals. Typically when the sima comes to the surface it is basalt, so sometimes this layer is called the 'basalt layer' of the crust. The sima layer is also called the basal crust or basal layer because it is the lowest layer of the crust. Because the ocean floors are mainly sima, it is also sometimes called the oceanic crust.

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

The thinnest layer of the earth is ____________.

  1. crust

  2. mantle

  3. inner core

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

The Earth can be divided into four main layers: the solid crust on the outside, the mantle, the outer core and the inner core. Out of them, the crust is the thinnest layer of the Earth, amounting for less than 1% of our planet's volume

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

The boundary that separates the mantle from the core is called _________.

  1. Gutenberg Discontinuity

  2. Mohorovicic Discontinuity

  3. Core Boundary

  4. All of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Gutenberg Discontinuity is the boundary layer between the Earth's mantle and the outer core, characterized by a significant change in seismic wave velocity.

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

Which is the right sequence of the different layers of the earth's interior?

  1. SIAL, SIMA, Asthenosphere, Mesosphere, NIFE

  2. SIMA, SIAL, Asthenosphere, NIFE, Mesosphere

  3. Asthenosphere, Mesosphere, SIAL, SIMA, NIFE

  4. NIFE, SIAL, SIMA, Asthenosphere, Mesosphere
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Earth's interior is composed of layers based on composition and density: SIAL (crust), SIMA (lower crust/upper mantle), Asthenosphere, Mesosphere, and NIFE (core).

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

The innermost layer of the earth's interior is called _____________.

  1. SIAL

  2. SIMA

  3. NIFE

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

The innermost layer of the earth is core. This central mass mainly made of nickel and iron and therefore is known as NIFE. The density of the layer is 5.1 to 13.00. It is composed of heaviest mineral materials. The core contains 1/3 of the entire mass of the earth. It has two layers outer metallic core and inner metallic core.

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

The innermost layer of the earth is _______.

  1. crust

  2. core

  3. mantle

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

The core is the innermost layer of the earth with density 5.1 to 13.00. It composed of heaviest minerals. This central mass is mainly made of nickel and iron and therefore is known as NIFE. The core contains 1/3 of the entire mass of the earth. The materials of this part may be liquid, plastic or even solid state due to tremendous pressure from above.

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

The Sima layer is formed of _______ and _________.

  1. silica and argon

  2. sulphur and magnesium

  3. silica and magnesium

  4. sulphur and argon
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The Sima layer is formed of silica and magnesium. This layer is below top layer and made up of basalt rock which is heavier than the topmost layer. The density of the layer varies from 3.1 to 5.00. the average thickness of this layer is 100 to 2900 km.

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

Lithosphere consists of

  1. Crust of earth

  2. Upper part of mantle

  3. Both A and B

  4. Crust and asthenosphere
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • The lithosphere is the outer solid shell of the Earth and consists of all the mountains, rocks, stones, top soil and sand found on the planet.
  • The lithosphere includes the crust and the uppermost layer of the mantle. It also includes all the rocks under the sea and under the surface of the Earth.
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

What is the thickness of the lithosphere?

  1. 250 km

  2. 200 km

  3. 150 km

  4. 100 km
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The topmost layer of the earth is solid, the thinnest, and the lightest and is known as the lithosphere. The thickness of the lithosphere of about 100 km. It is mostly composed of granite. The lithosphere has two layers - the outer layer and the inner layer.