With reference to Earth movements, consider the following statements: 1. Endogenic forces work on the surface of the earth. 2. Diastrophic forces are a type of Endogenic force. 3. Sudden forces can cause mass destruction over the surface of the earth. Which of the statements given above is/are correct?

The correct option is (c). Explanation The earth's surface is continuously shaped by internal and external forces. These forces are classified based on their origin: Endogenic forces originate within the earth, while Exogenic forces operate on the surface. - Statement 1 is Incorrect: Endogenic forces are internal forces that generate within the earth's interior. They are responsible for building relief features. In contrast, Exogenic forces work on the surface of the earth, deriving energy primarily from the sun and gradients created by tectonic factors. - Statement 2 is Correct: Endogenic forces are broadly divided into two types based on intensity and speed: - Diastrophic forces: These are slow movements that operate over long geological periods (e.g., mountain building or continent formation). - Sudden forces: These occur abruptly (e.g., earthquakes and volcanoes). - Statement 3 is Correct: Sudden forces act very rapidly and are capable of causing massive destruction and significant changes to the earth's surface in a short span of time. Events like volcanic eruptions and earthquakes are primary examples of geomorphic changes driven by sudden endogenic forces. Key Takeaway: Endogenic forces are internal and generally constructive (creating landforms), categorized into slow (diastrophic) and sudden movements. Exogenic forces are external and generally destructive (wearing down relief).

With reference to Earth movements,… - NCERT Class 7 Geography MCQ

NCERT Class 7 Geography — Chapter 2: Our Changing Earth

mcqmedium

With reference to Earth movements, consider the following statements:

Endogenic forces work on the surface of the earth.
Diastrophic forces are a type of Endogenic force.
Sudden forces can cause mass destruction over the surface of the earth.

Which of the statements given above is/are correct?

NCERT textbook question

From NCERT The Earth Our Habitat · Page 12

Options

A1 and 2 only
B2 only
C2 and 3 only
D1, 2 and 3

Did you get this right?

Solution

The correct option is (c).

Explanation

The earth's surface is continuously shaped by internal and external forces. These forces are classified based on their origin: Endogenic forces originate within the earth, while Exogenic forces operate on the surface.

Statement 1 is Incorrect: Endogenic forces are internal forces that generate within the earth's interior. They are responsible for building relief features. In contrast, Exogenic forces work on the surface of the earth, deriving energy primarily from the sun and gradients created by tectonic factors.
Statement 2 is Correct: Endogenic forces are broadly divided into two types based on intensity and speed:
- Diastrophic forces: These are slow movements that operate over long geological periods (e.g., mountain building or continent formation).
- Sudden forces: These occur abruptly (e.g., earthquakes and volcanoes).
Statement 3 is Correct: Sudden forces act very rapidly and are capable of causing massive destruction and significant changes to the earth's surface in a short span of time. Events like volcanic eruptions and earthquakes are primary examples of geomorphic changes driven by sudden endogenic forces.

Key Takeaway: Endogenic forces are internal and generally constructive (creating landforms), categorized into slow (diastrophic) and sudden movements. Exogenic forces are external and generally destructive (wearing down relief).

Your note

More from Chapter 2: Our Changing Earth

Consider the following pairs: 1. Angel Falls : South America 2. Niagara Falls : Africa 3. Victoria Falls : North America Which of the pairs given above is/are correctly matched?

medium

As the river enters the plain, it twists and turns forming large bends known as:

easy

What causes the movement of Lithospheric plates?

easy

With reference to Earthquakes, consider the following statements: 1. The place in the crust where the movement starts is called the focus. 2. The place on the surface above the focus is called the focus. 3. Vibrations travel outwards from the epicentre as waves. Which of the statements given above is/are correct?

medium

The material carried by the glacier such as rocks, sand, and silt gets deposited to form:

easy

Keep practising Chapter 2: Our Changing Earth

Work through every question from this NCERT chapter.

Browse all NCERT Class 7 Geography chapters