Causes & Controlling Factors of Landslides

Duration: 1 min

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Module outline

  1. Paper-I | Mathematical Abilities: Ratio and Proportion (Ratios), Divisibility Rules, Data Interpretation, Mixture and Alligation, Number System, Speed Time and Distance, Arithmetic, Percentage, Average, Simple Interest and Compound Interest, Profit and Loss, Partnership, Time and Work, Algebra, Mensuration and Geometry, Trigonometry, Linear Algebra
  2. Paper-I | Reasoning & General Intelligence: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Syllogisms, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Seating Arrangements, Blood Relations, Directions (Direction Test), Analytical Reasoning (Counting Figures Reasoning), Puzzle Solving (Puzzles), Calendar, Clock, Cubes & Dices, Selection Decision Table (Decision Making), Logical Sequence Of Words, Crypt Arithmetic, Venn Diagram, Data Arrangement, Inequality, Analogy, Ranking, Order and Sequence, Clerical Aptitude, Verbal Classification
  3. Paper-I | English Language & Comprehension: Vocabulary, Noun, Subject Verb Agreement (Verb Noun Agreement), Adjectives, Tenses, Pronoun, Preposition, Articles, Direct and Indirect Speech, Conjunction, Modals, Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Sentence Correction (Error Correction), Sentence Completion (Fill in the blanks), Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Cloze Test (Cloze Passage), Verbal Analogy (Word Based Analogy), Sentence Construction, Active Passive Voice (Voice), Determiner, Facts, Inference and Judgements
  4. Paper-I | General Awareness: Polity, Physics, Biology, Chemistry, Environment, GK- Current Affairs, Static General Knowledge, History, Geography, Indian Economy
  5. Paper-I | Computer Knowledge/Proficiency): Basics of COA, Transport Layer Services, Keyboard Shortcuts, MS Office Applications, MS Office by Yash Sir, Emerging Tech Trends, Society, Law & Ethics, Website, Browser & Services, Internet Fundamentals, Web Design & Development, Introduction to CN, Hardware basics, Network Security, Application Layer, Cyber and Info Security, Cyber Threats and Malware Attacks, Cyber Safety and Security, Role of Internet and Web Services, Security in Mobile and Wireless Computing
  6. Paper-II | Statistics: Statistics, Probability, Research Process Steps
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

The video presents a lecture slide titled "2. Causes & controlling factors" which explains that landslides result from a combination of natural and human factors. The slide lists several key factors: Geology, including rock type and presence of faults; Geomorphic agents such as rivers, glaciers, and waves; High rainfall or rapid snowmelt, which increases pore-water pressure and reduces slope strength; Vegetation cover, where removal of roots weakens slope stability; Human activities like road cuttings, dam construction, mining, and construction, all of which increase landslide risk; Slope angle and relief, noting that steep slopes are more unstable; and Seismic shaking from earthquakes, which can trigger slope failure. The instructor, visible in a small window, discusses these points, emphasizing the interplay between natural processes and human actions in causing landslides.

Chapters

  1. 0:00 – 1:10 00:00-01:10

    The video displays a static presentation slide titled "2. Causes & controlling factors" which outlines the factors contributing to landslides. The slide begins with the statement "Landslides result from a combination of natural and human factors:" and then lists several bullet points. These include: Geology (rock type, presence of faults); Geomorphic agents (agents shaping landforms, e.g., rivers, glaciers, waves); High rainfall or rapid snowmelt (increases pore-water pressure and reduces slope strength); Vegetation cover (removal of roots weakens slope stability); Human activities (road cuttings, tunnelling, dam construction, mining, unplanned hill agriculture, and construction - all increase landslide risk); Slope angle and relief (steep slopes are more unstable); and Seismic shaking (earthquakes) can trigger slope failure. The instructor, visible in a small window in the top right, is speaking and gesturing, explaining the content on the slide. The slide is framed with an orange border and has a watermark for "KNOWLEDGE GATE".

The lecture systematically breaks down the complex phenomenon of landslides into a list of primary causes, categorizing them into natural and human-induced factors. It emphasizes that slope stability is a balance of forces, and any factor that increases the driving forces (like water or gravity) or decreases the resisting forces (like rock strength or root cohesion) can lead to failure. The slide serves as a comprehensive checklist for understanding the multifaceted nature of landslide risk, highlighting that both geological predisposition and external triggers, whether natural or anthropogenic, are critical.

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