Layers of Atmosphere - Part 2

Duration: 3 min

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Module outline

  1. Paper - 1 | Unit - 1 | Teaching Aptitude: Nature, Objectives & Characteristics of Teaching, Learners & Learning Process, Factors Affecting Teaching, Methods of Teaching, Teaching-Learning Aids & ICT Integration, Evaluation, Assessment & Measurement
  2. Paper - 1 | Unit - 2 | Research Aptitude: Introduction to Research, Validity & Reliability, Research Paradigms & Types of Research, Research Process Steps, Research Ethics, Writing & Publication
  3. Paper - 1 | Unit - 3 | Comprehension: Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions)
  4. Paper - 1 | Unit - 4 | Communication: Communication Basics, Language and Semiotics, Types of Communication, Communication Models, Mass Communication, Mass Media, Journalism, General Knowledge and General Studies related to Communication
  5. Paper - 1 | Unit - 5 | Mathematical Reasoning and Aptitude: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Number System, Percentage, Ratio and Proportion (Ratios), Simple Interest and Compound Interest, Speed Time and Distance, Powers and Exponents (Surds and Indices), Profit and Loss, Average, Blood Relations, Directions (Direction Test), Analytical Reasoning (Counting Figures Reasoning), Verbal Analogy (Word Based Analogy), Divisibility Rules, Calendar, Miscellaneous, Time and Work, Algebra, Permutation and Combination, Probability
  6. Paper - 1 | Unit - 6 | Logical Reasoning: Syllogisms, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Venn Diagram, School Of Thoughts, Fallacy, Western Logic
  7. Paper - 1 | Unit - 7 | Data Interpretation: Data Interpretation
  8. Paper - 1 | Unit - 8 | Information and Communication Technology: MS Office Applications, Cyber Threats and Malware Attacks, Role of Internet and Web Services, Electronic Data Interchange and E-Commerce, Internet Fundamentals, Web Design & Development, Web Publishing & Hosting, Emerging Technologies, Terms & Abbreviations, Artificial Intelligence, Basics of COA, Introduction to OS, Introduction to CN, Data Communication, Net Layer: IP Addressing, Network Security, Number System, Number Representation, Society, Law & Ethics, Keyboard Shortcuts, Website, Browser & Services
  9. Paper - 1 | Unit - 9 | People Development and Environment: Ecosystem, Biomes & Environmental Issues, MDG & SDG, Air Pollution, Water Pollution, Soil, Noise Pollution and Waste Management, Natural Resources, Energy & Disaster Management, Global Environmental Conventions – COP, Protocols & ISA
  10. Paper - 1 | Unit - 10 | Higher Education System: Vedic Education, Jainism & Buddhism, Ancient Universities, Pre-Independence Commissions, Post-Independence Policy, Higher Education Structure & Accreditation, Universities & Learning Programmes, Types of Education & NEP 2020
  11. Live Classes: NTA UGC NET 2025 Live Class
  12. Full Mock Tests:
  13. Previous Year Papers:
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

The video presents a lecture on the layers of the Earth's atmosphere, using a diagram and text to explain their characteristics. The instructor begins by discussing the mesosphere, which lies above the stratosphere and extends up to 80 km, with its upper limit being the mesopause. The diagram shows that meteorites burn up in this layer. The lecture then moves to the thermosphere, where temperature rises rapidly with height, extending from 80 to 400 km. The instructor highlights that the ionosphere is a part of this layer, which reflects radio waves and is where auroras occur. Finally, the exosphere is described as the uppermost layer, located between 700 and 10,000 km, with very thin air and light gases like helium and hydrogen escaping into space. The visual aid includes a graph of temperature versus altitude and a vertical cross-section of the atmosphere with labeled layers and illustrative icons.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video opens with a diagram of the Earth's atmospheric layers. The instructor explains the mesosphere, which lies above the stratosphere and extends up to a height of 80 km. The upper limit of the mesosphere is known as the mesopause. The text on the screen states that meteorites burn up in this layer. The instructor uses a marker to point to the mesosphere on the diagram, which is located between the stratosphere and the thermosphere. The diagram also shows the temperature profile, indicating that the mesosphere is a region of decreasing temperature with altitude, ending at the mesopause. The instructor then moves on to discuss the thermosphere, which is located above the mesosphere.

  2. 2:00 – 3:26 02:00-03:26

    The instructor discusses the thermosphere, explaining that its temperature rises very rapidly with increasing height. The text on the screen states that the ionosphere is a part of this layer, which extends between 80-400 km. The thermosphere helps in radio transmission as radio waves are reflected back to the Earth by this layer. The instructor points out that aurora borealis (Northern lights) and aurora australis (Southern lights) are sometimes seen in this layer. The video then transitions to the exosphere, the uppermost layer of the atmosphere above the thermosphere. The text describes the exosphere as being located between about 700 and 10,000 kilometers above Earth's surface, with very thin air. It is noted that light gases like helium and hydrogen float into space from here. The instructor uses a marker to point to the exosphere on the diagram.

The lecture systematically progresses from the lower to the upper layers of the atmosphere, using a combination of a detailed diagram and textual information to explain the structure and function of each layer. The instructor first establishes the mesosphere, defining its boundaries and noting its role in meteorite ablation. The lesson then advances to the thermosphere, highlighting its unique temperature profile, the presence of the ionosphere, and its role in radio communication and auroras. The final segment covers the exosphere, emphasizing its extreme altitude, thinness, and the escape of light gases. This structured approach provides a comprehensive overview of the atmospheric layers, their properties, and their significance.

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