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Formula Sheet

Earth's Structure — Formula Sheet

ICSE · Class 9 · Geography

4 formulas from Earth's Structure (ICSE Class 9 Geography) on one page, grouped by topic. Part of the ICSE Class 9 Geography syllabus.

51 questions34 flashcards4 formulas & key relations5 concepts

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A cross-section diagram showing the Earth's main layers: Crust, Mantle (Upper and Lower), and Core (Outer and Inner), with their approximate depths and key compositions.
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4 Entries · 1 Section

Formulas and Key Relations

2. Temperature Inside the Earth

Temperature increase = 1°C for every 32 metres of descent

Temperature at 48 km depth = 1200°C to 2000°C

Temperature at 400 km depth = 1500°C

Temperature at about 5100 km depth = 4300°C

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Frequently Asked Questions

What are the important topics in Earth's Structure for ICSE Class 9 Geography?
Key topics in Earth's Structure include Earth’s Interior: Main Layers, Crust: Lithosphere, Sial, and Sima, Temperature, Pressure, and Density Inside Earth, Mantle: Position, Extent, and Parts. Study these first, then practise questions on each for Class 9 exams.
How many formulas are in Earth's Structure?
This sheet lists 4 formulas from Earth's Structure, grouped by topic. Learn what each symbol stands for so you can apply the formula, not just recall it.
How should I revise Earth's Structure for Class 9 exams?
Learn the core ideas first, then work through the 51 practice questions on Earth's Structure. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All ICSE Class 9 Geography Formula Sheet

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