Floods

Duration: 2 min

This video lesson is available to enrolled students.

Return to /learn/SSC-JE-IMD-SCIENTIFIC-ASSISTANT-COMPUTER-SCIENCE/general-awareness/geography/natural-disaster-environmental-geography/asset-floods after enrolling

Inside: a video lesson and guided study material.

Module outline

  1. General Intelligence & Reasoning: Analogy, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Blood Relations, Directions (Direction Test), Ranking, Order and Sequence, Logical Sequence Of Words, Syllogisms, Venn Diagram, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Selection Decision Table (Decision Making), Data Sufficiency, Puzzle Solving (Puzzles), Data Arrangement, Cubes & Dices, Calendar, Clock, Arithmetic, Number System, Divisibility Rules, HCF LCM, Verbal Analogy (Word Based Analogy)
  2. General Awareness: Physics, Chemistry, Biology, History, Geography, Polity, Indian Economy, Environment, Static General Knowledge, GK- Current Affairs
  3. Engineering Mathematics: Set Theory, Relations, Functions, Graph Theory, Group Theory, Propositional and Predicate Logic, Linear Algebra, Calculus, Probability, Statistics
  4. Digital Logic: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits, Number System, Number Representation, Floating Point Rep
  5. Computer Organisation & Architecture: Basics of COA, Cache Memory Organization, Input Output Organisation, Pipelining, Instr Formats & Modes, Control Unit Design
  6. Programming & Data Structures: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling, Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  7. Databases: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, File Organization & Indexing, Relational Algebra, SQL, Relational Calculus, Transaction Management, Concurrency Control
  8. Algorithms: Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Dynamic Programming, Minimum Spanning Trees, Shortest Path Algos
  9. Theory of Computation: Introduction to TOC, Deterministic FA (DFA), Non-Deterministic FA, Regular Expressions, Grammar, Regular Language Properties, Moore & Mealy Machines, Pushdown Automata & CFG, Turing Machines, Complexity Theory
  10. Compiler Design: Intro to Compilers, Lexical Analysis, Grammar & CFG, Syntax Analysis: Top-Down, Syntax Analysis: Bottom-Up, Semantic Analysis & SDT, Intermediate Code Gen, Code Optimization, Run Time Environment
  11. Operating System: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Threads & Process Creation, Deadlock, Memory Management, Virtual Memory, Disc Scheduling, File Management
  12. Computer Networks: Introduction to CN, DLL: Access Control, DLL: Flow Control, DLL: Error Control, DLL: Framing, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Net Layer:Routing Protocol, Transport Layer Services, TL: Congestion & UDP, Application Layer, Hardware Basics
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

The video presents a lecture on floods and droughts, beginning with a definition of a flood. The instructor defines a flood as the inundation, overflowing, or submerging of land and human settlements due to a rise in water levels in rivers, lakes, or other water bodies beyond their normal capacity. The primary cause of flooding is explained as surface run-off, which occurs when the volume of water from rainfall flowing over land exceeds the carrying capacity of river channels and streams. The lecture then transitions to a slide detailing the causes of floods, which are categorized into natural and human-induced factors. Natural causes include prolonged high-intensity rainfall, melting of ice and snow from mountains, storm surges from tropical cyclones, and a reduction in the infiltration rate of water into the soil. Human causes listed are deforestation, which reduces water absorption by soil, unscientific agriculture, illegal encroachment on drainage channels and riverbeds, and the construction of settlements on floodplains, all of which reduce the natural flow of rivers.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video starts with a slide titled 'Floods and Droughts'. The instructor defines a flood as the inundation (overflowing or submerging) of land and human settlements due to a rise in water in rivers, lakes, or other water bodies beyond their normal capacity. The slide explains that flooding occurs when surface run-off (water from rainfall flowing over land) exceeds the carrying capacity of river channels and streams. The instructor then begins to draw a diagram on the slide, illustrating the process of surface run-off, with labels such as 'Ac' (likely for precipitation), 'Temp' (temperature), and 'G' (likely for ground), showing how water flows from the land into a river. The instructor also adds a diagram of a river overflowing its banks, visually representing the flood. The slide is from 'Knowledge Gate', as indicated by the watermark.

  2. 2:00 – 2:09 02:00-02:09

    The video transitions to a new slide titled 'Causes of Floods'. The slide is divided into two main categories: '1. Natural Causes' and '2. Human Causes'. Under natural causes, the slide lists: high-intensity rainfall for a long period, melting of ice and snow from mountains, storm surge in coastal areas caused by tropical cyclones, reduction in infiltration rate due to soil compaction or saturation, and sediment deposition and soil erosion reducing the depth of river channels. Under human causes, it lists: deforestation (cutting down trees) reducing water absorption by soil, unscientific agriculture disturbing soil balance, encroachment (illegal occupation) on natural drainage channels and riverbeds, and construction of settlements on flood plains, reducing natural flow of rivers. The instructor is seen speaking, but no new text or diagrams are added to the slide in this segment.

The lecture provides a structured overview of floods, starting with a clear definition and the fundamental hydrological process of surface run-off. It then systematically categorizes the causes of flooding into natural and human-induced factors, highlighting the interplay between natural weather events and human activities that exacerbate the risk of flooding. The visual aids, including the definition and the detailed list of causes, serve to reinforce the key concepts for the student.

Loading lesson…