With reference to the Lithosphere, consider the following statements: 1. It comprises the rocks of the earth’s crust and the thin layers of soil. 2. The elevation of land is measured from the ocean floor. 3. The level of seawater remains the same everywhere. Which of the statements given above is/are correct?

The correct option is (c) 1 and 3 only. Explanation The Lithosphere refers to the solid outer section of the Earth. In physical geography, specific baselines are established to measure altitude and depth, relying on the properties of global water bodies. - Statement 1 is correct: The solid portion of the Earth is called the Lithosphere. It comprises the rocks of the Earth’s crust and the thin layers of soil that contain nutrient elements essential for sustaining organisms. - Statement 2 is incorrect: The elevation of land is measured from the level of the sea, which is taken as zero. It is not measured from the ocean floor, as the topography of the ocean floor varies drastically (e.g., ridges, trenches, and plains). - Statement 3 is correct: Since all the oceans of the world are connected, the level of seawater remains virtually the same everywhere due to gravity and the fluid nature of water. This uniform level, known as Mean Sea Level (MSL), serves as the datum for measuring elevation. Key Takeaway: Altitudes on land are measured relative to Mean Sea Level (MSL) because the sea surface provides a consistent global baseline, unlike the uneven ocean floor.

With reference to the Lithosphere,… - NCERT Class 6 Geography MCQ

NCERT Class 6 Geography — Chapter 2: Major Domains of the Earth

mcqmedium

With reference to the Lithosphere, consider the following statements:

It comprises the rocks of the earth’s crust and the thin layers of soil.
The elevation of land is measured from the ocean floor.
The level of seawater remains the same everywhere.

Which of the statements given above is/are correct?

NCERT textbook question

From NCERT The Earth Our Habitat · Page 31

Options

A1 and 2 only
B2 only
C1 and 3 only
D1, 2 and 3

Did you get this right?

Solution

The correct option is (c) 1 and 3 only.

Explanation

The Lithosphere refers to the solid outer section of the Earth. In physical geography, specific baselines are established to measure altitude and depth, relying on the properties of global water bodies.

Statement 1 is correct: The solid portion of the Earth is called the Lithosphere. It comprises the rocks of the Earth’s crust and the thin layers of soil that contain nutrient elements essential for sustaining organisms.
Statement 2 is incorrect: The elevation of land is measured from the level of the sea, which is taken as zero. It is not measured from the ocean floor, as the topography of the ocean floor varies drastically (e.g., ridges, trenches, and plains).
Statement 3 is correct: Since all the oceans of the world are connected, the level of seawater remains virtually the same everywhere due to gravity and the fluid nature of water. This uniform level, known as Mean Sea Level (MSL), serves as the datum for measuring elevation.

Key Takeaway: Altitudes on land are measured relative to Mean Sea Level (MSL) because the sea surface provides a consistent global baseline, unlike the uneven ocean floor.

Your note

More from Chapter 2: Major Domains of the Earth

Which of the following statements is correct regarding the size of Europe compared to Asia?

easy

Which continent covers the largest part of the land mass in the Northern Hemisphere?

medium

Who among the following were the first individuals to scale Mt. Everest on 29th May, 1953?

easy

Consider the following statements regarding the continents of the world: 1. Asia is the largest continent and covers about one-third of the total land area of the earth. 2. The Equator passes through the center of the Asian continent. 3. Asia is separated from Europe by the Andes Mountains on the west. Which of the statements given above is/are correct?

medium

Consider the following statements regarding the domain of the Earth: 1. The solid portion of the earth is called the Lithosphere. 2. The gaseous layers that surround the earth are called the Hydrosphere. 3. The area covered by water is called the Hydrosphere. Which of the above statements is/are correct?

easy

Keep practising Chapter 2: Major Domains of the Earth

Work through every question from this NCERT chapter.

Browse all NCERT Class 6 Geography chapters