Скачать или смотреть BPSC | 72nd BPSC Foundation | Geography Demo Class | Internal Structure of Earth | Lakshman Sir

BPSC | 72nd BPSC Foundation | Geography Demo Class | Internal Structure of Earth | Lakshman Sir #bpsc #civilserviceexam #theofficersacademy #geography

Welcome to IAS PCS by The Officer’s Academy, Bihar’s most trusted platform for BPSC 72nd Foundation, GS Paper-1 Geography, and concept-building Demo Classes.
In today’s important session, Lakshman Sir explains:

“Internal Structure of the Earth (पृथ्वी की आंतरिक संरचना)”

A high-scoring and frequently asked topic in BPSC Prelims, Mains, SSC, Railway, and TRE 4 GS.

📘 What You Will Learn in This Geography Demo Class:
1️⃣ Layers of the Earth

✔️ Crust (Lithosphere)
✔️ Mantle (Asthenosphere & Mesosphere)
✔️ Core (Outer + Inner Core)
• Composition
• Temperature
• Density
• Physical & chemical properties

2️⃣ Earthquake Waves & Evidence

• P-waves, S-waves, L-waves
• Shadow zone
• How seismic waves prove Earth’s internal structure

3️⃣ Types of Crust

• Continental crust
• Oceanic crust
• Differences & composition (SIAL–SIMA)

4️⃣ Lithosphere, Asthenosphere & Plate Tectonics

• Mechanical layers
• Role in earthquakes & volcanoes
• Plate boundaries (basic introduction)

5️⃣ Rocks & the Rock Cycle (Brief)

• Igneous
• Sedimentary
• Metamorphic

6️⃣ Exam-Oriented Add-ons:

✔️ BPSC Prelims MCQs
✔️ BPSC Previous Year Questions
✔️ Expected Questions for 72nd
✔️ NCERT Class 6–11 integrated concepts
✔️ Map & diagram-based explanation

This class builds a strong foundation for BPSC Geography.

⭐ Why Watch This Class:

🔹 Taught by Lakshman Sir, expert Geography faculty
🔹 NCERT + BPSC PYQ integrated
🔹 Best for concept clarity & prelims scoring
🔹 Clear diagrams & easy explanations
🔹 Demo Class for full Foundation Batch

🔥 Hashtags

#bpsc #bpsc72nd #bpscfoundation #bpscgeography #geographyclass #internalstructureofearth #crustmantlecore #lakshmansir #bpscprelims #bpscmains #gkgs #tre4 #ssc #railwayexam #earthquakewaves #ncertgeography #theofficersacademy