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Shaping of the Earth's Surface

CBSE · Class 9 · Social Science

Flashcards for Shaping of the Earth's Surface — CBSE Class 9 Social Science. Quick Q&A cards covering key concepts, definitions, and formulas.

56 questions68 flashcards5 concepts

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68 Flashcards
Card 1Plate tectonics

What is plate tectonics?

Answer

Plate tectonics is an important theory given by W.J. Morgan in earth science. It explains the movement of the Earth's crust and shows that the outermost layer of the Earth is broken into tectonic plat

Card 2प्लेट विवर्तनिकी

प्लेट विवर्तनिकी क्या है?

Answer

प्लेट विवर्तनिकी (Plate tectonics) W.J. मॉर्गन द्वारा भूविज्ञान में दिया गया एक महत्वपूर्ण सिद्धांत है। यह पृथ्वी के भूपर्पटी की गति को समझाता है और दिखाता है कि पृथ्वी की सबसे बाहरी परत विवर्तनिक प्ल

Card 3प्लेट विवर्तनिकी

टेक्टोनिक प्लेट क्या होती हैं?

Answer

विवर्तनिक प्लेट (Tectonic plates) ठोस चट्टान के बड़े बड़े स्लैब होते हैं जो स्थलमण्डल (लिथोस्फीयर) का निर्माण करते हैं। ये बहुत धीरे-धीरे चलते हैं, आमतौर पर प्रति वर्ष कुछ सेंटीमीटर। ये महाद्वीपीय प्ल

Card 4Plate tectonics

What are tectonic plates?

Answer

Tectonic plates are massive slabs of solid rock that make up the lithosphere. They move very slowly, usually a few centimetres per year. They can be continental plates, oceanic plates, or mixed plates

Card 5Earth's interior

What is the lithosphere?

Answer

The lithosphere is the crust and the upper part of the mantle together. It is broken into different tectonic plates that move over the semi-molten asthenosphere below.

Card 6पृथ्वी का अंतःभाग

शिलामण्डल क्या है?

Answer

शिलामण्डल भूपर्पटी और आवरण का ऊपरी भाग मिलकर शिलामण्डल कहलाता है। यह विभिन्न विवर्तनिक पट्टियों में विभाजित है जो नीचे अर्ध-पिघले हुए एस्थेनोस्फीयर के ऊपर चलती हैं।

Card 7प्लेट की गति

टेक्टोनिक प्लेटें कैसे चलती हैं?

Answer

मेंटल में संवहन धाराओं के कारण टेक्टोनिक प्लेटें चलती हैं। पृथ्वी के कोर से निकलने वाली गर्मी सामग्री को ऊपर उठाती है, जबकि ठंडी सामग्री नीचे डूब जाती है। यह गति प्लेटों को धकेलती और खींचती है।

Card 8Plate movement

How do tectonic plates move?

Answer

Tectonic plates move because of convection currents in the mantle. Heat from the Earth's core makes material rise, while cooler material sinks. This movement pushes and pulls the plates.

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Frequently Asked Questions

What are the important topics in Shaping of the Earth's Surface for CBSE Class 9 Social Science?
Shaping of the Earth's Surface covers several key topics that are frequently asked in CBSE Class 9 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Shaping of the Earth's Surface — CBSE Class 9 Social Science?
Understand the core concepts first, then work through the 56 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
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There are 68 flashcards for Shaping of the Earth's Surface covering key definitions, formulas, and concepts. Use them daily for 10–15 minutes for best results.

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