Inside Our Earth

8 solved questions from Class 7 Geography, each with the full working. Tap any question to see the step-by-step solution.

• 1 Why is the theme of 'Inside Our Earth' important in Social Science? medium MCQ Social Significance
• 2 Which key factor is highlighted in the study of 'Inside Our Earth'? medium MCQ Key Factors & Analysis
• 3 What lesson can be drawn from the study of 'Inside Our Earth' in modern context? hard MCQ Modern Relevance
• 4 Which source or evidence is commonly used to study 'Inside Our Earth'? medium MCQ Sources of Information
• 5 What is the primary topic or theoretical principle explored in 'Inside Our Earth' (Class 7 GEOGRAPHY)? medium MCQ Chapter Core Principle
• 6 Which key mechanism or analytical rule is highlighted in 'Inside Our Earth'? medium MCQ Key Analytical Mechanism
• 7 An earthquake generates a primary seismic wave (P‑wave) that travels at a speed of 6.0 km/s. If the source of the quake is 30 km deep below the Earth's surface, how long does it take for the P‑wave to reach the surface? medium 2 marks Travel time of seismic waves
• 8 The average temperature at Earth's core is 5500 °C and at the surface is 15 °C. If the thermal conductivity of the mantle is 3 W/(m·K) and its average thickness is 3000 km, estimate the heat flux per unit area (in W/m²) from the core to the surface. hard 4 marks Heat flux using Fourier's law