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Which of the following statements is incorrect?  (1) The Oceanic crust is thinner as compared to the continental crust. (2) Topmost layer of the Mantle is known as the Asthenosphere. (3) The density of the outer core is higher than that of the inner core. (4) The core is made up of heavy materials like Iron and Nickel.

Which of the following statements is incorrect?  (1) The Oceanic crust is thinner as compared to the continental crust. (2) Topmost layer of the Mantle is known as the Asthenosphere. (3) The density of the outer core is higher than that of the inner core. (4) The core is made up of heavy materials like Iron and Nickel. Correct Answer 1, 2 and 4

The correct answer is 1, 2 and 4.

Key Points

  • The thickness of Oceanic crust is 5 km whereas that of Continental crust is around 30 km. 
  • The crust is made up of heavier rocks having a density of 3 gm/cm3. 
  • The asthenosphere is the uppermost portion of the Mantle which extends up to 400 km.
  • It is the main source of magma. 
  • The density of mantle is higher than that of crust and is equal to 3.4 gm/cm3. 
  • The outer core is in the liquid state while the inner core is in the solid-state. 
  • The density of the outer core is around 5 gm/cm3 and that of the inner core is around 13 gm/cm3. 
  • This layer is also known as the nife layer as it is rich in Nickel and iron.

Related Questions

Consider the following statements: 1. The discontinuity between the crust and the hydrosphere is known as the Conrad Discontinuity. 2. Crust is the outermost liquid part of the earth, normally about 1-20 kms thick. 3. The core is separated from the mantle by Guttenberg’s Discontinuity. 4. The discontinuity between the upper mantle and the lower mantle is known as Repetti Discontinuity. Which of the statements given above is/ are correct?  
Consider the following statements regarding the layers of the earth? 1. The upper portion of the mantle is called the asthenosphere. 2. Lehman discontinuity is the boundary between the outer core and Mantle 3. Core has the heaviest minerals of highest density. Which among the following above given statements are correct?
The various types of plate convergence is
  1. I. oceanic-oceanic convergence
  2. II. oceanic-continental convergence
  3. III. continental-continental convergence
Consider the following statements: 1. The continental crust is composed of iron magnesium silicate igneous rocks, like basalt. 2. Gutenberg Discontinuity forms the boundary between the crust and the asthenosphere. Which of the statements given above is\are correct?
Which of the following statement is true? a) Edward Braddock was made the American Army commander-in-chief at second Continental Congress. b) George Washington was made the American Army commander-in-chief at second Continental Congress. c) William Shirley was made the American Army commander-in-chief at second Continental Congress. d) James Abercrombie was made the American Army commander-in-chief at second Continental Congress.
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Which of the following are true regarding the crust of the earth?
I. It is the outer thin layer with a total thickness of about 100 km
II. It forms around 0.5% of the earth's volume
III. The outer covering of the crust is of sedimentary material
IV. The lower layer of the crust consists of basaltic and ultra-basic rocks
An object X sinks in liquids P and Q but floats in liquid R. Which of the following conclusions can be made from these observations? A) Density of X is more than the density of P B) Density of X is less than the density of R C) Density of P is equal to the density of R D) Density of P is less than the density of R
Which of the following statements is not true with regard to the crust of the Earth? (i) It is the outermost layer of the earth. (ii) It is brittle in nature. (iii)  The thickness of the crust varies under the oceanic and continental areas.
The oceanic layer is the extension of C-layer of the continental crust and A and B-layer are mostly absent.