Question 16 of 23beginner🧠 RememberShort Answer3 marks

What are mass movements that are real rapid and perceptible? List.

Correct Answer

Landslides are relatively rapid and perceptible mass movements where the materials involved are relatively dry. The size and shape of the detached mass depends on the nature of discontinuities in the rock, degree of weathering, and steepness of the slope.

The various types of landslides include: Slump (slipping of one or several units of rock debris with backward rotation with respect to the slope), Debris slide (rapid rolling or sliding of earth debris without backward rotation), Debris fall (nearly free fall of earth debris from a vertical or overhanging face), and Rockslide (sliding of individual rock masses down bedding, joint or fault surfaces).

Exercise: EXERCISES | Q: 2(ii) | (Page 11)
For More Understanding

Explanation

The textbook explicitly states that 'Landslides' are 'relatively rapid and perceptible movements.' The question asks students to identify these movements and list their types. The four main types mentioned in the context are: Slump, Debris slide, Debris fall, and Rockslide. Each type has distinct characteristics based on the nature of movement and the materials involved.

Solution Steps

  1. Step 1: Identify from context that 'Landslides' are described as 'relatively rapid and perceptible movements.'

  2. Step 2: List the types of landslides mentioned: Slump, Debris slide, Debris fall, and Rockslide.

  3. Step 3: Briefly describe each type using the definitions provided in the text.

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