Consider the following pairs based on Layers of the Earth and Density The crust - It is made up of heavier rocks having density of 3 g/cm 3 . The Mantle - It has density lower than the crust’s (2.4 g/cm 3 ). The core - The density here is around 13 g/cm 3 . Which of the above pairs is not correctly matched? Options: A . &nbsp1 and 3 B . &nbsp1 and 2 C . &nbspNone D . &nbsp2 only

Consider the following pairs based on Layers of the Earth and Density Th

Question

Consider the following pairs based on Layers of the Earth and Density

The crust - It is made up of heavier rocks having density of 3 g/cm³.

The Mantle - It has density lower than the crust’s (2.4 g/cm³).

The core - The density here is around 13 g/cm³.

Which of the above pairs is not correctly matched?

Options:

A . 1 and 3

B . 1 and 2

C . None

D . 2 only

Answer: Option D
Answer: (d)
The Core is made up of heavier rocks having a density of 3 g/cm3. This type of rock found in the oceanic crust is basalt.
The mean density of material in the oceanic crust is 2.7 g/cm3.
The Mantle has a density higher than the crust’s (3.4 g/cm3).
The crust and the uppermost part of the mantle are called the lithosphere. Its thickness ranges from 10-200 km. The lower mantle extends beyond the asthenosphere. It is in a solid state.
The density of material at the mantle core boundary is around 5 g/cm3 and at the centre of the earth at 6,300 km, the density value is around 13g/cm3.
The core is made up of very heavy material mostly constituted by nickel and iron. It is sometimes referred to as the nife layer.

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