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Our Home: Earth, a Unique Life Sustaining Planet

CBSE · Class 8 · Science

Flashcards for Our Home: Earth, a Unique Life Sustaining Planet — CBSE Class 8 Science. Quick Q&A cards covering key concepts, definitions, and formulas.

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Card 1Earth and life

What makes Earth a unique planet in the solar system?

Answer

Earth is the only known planet where life exists. Its atmosphere, water, solid land, living world, and magnetic field work together to support life.

Card 2धरती और जीवन

सौर मंडल में पृथ्वी को क्या ग्रह अद्वितीय बनाता है?

Answer

पृथ्वी एकमात्र ज्ञात ग्रह है जहाँ जीवन मौजूद है। इसका वायुमंडल, जल, ठोस भूमि, जीव जगत और चुम्बकीय क्षेत्र जीवन को बनाए रखने के लिए एक साथ काम करते हैं।

Card 3Earth and water

Why is Earth called the Blue Planet?

Answer

Earth is called the Blue Planet because most of its surface is covered with water, so it looks blue from space.

Card 4धरती और जल

पृथ्वी को नीला ग्रह क्यों कहा जाता है?

Answer

पृथ्वी को नीला ग्रह इसलिए कहा जाता है क्योंकि इसकी अधिकांश सतह पानी से ढकी हुई है, इसलिए यह अंतरिक्ष से नीली दिखती है।

Card 5Hydrosphere

How much of Earth’s surface is covered with water?

Answer

Water covers about 70 per cent of Earth’s surface. It is found in ponds, lakes, rivers, springs, seas, oceans, and groundwater.

Card 6जलमण्डल

पृथ्वी की सतह का कितना हिस्सा पानी से ढका हुआ है?

Answer

पृथ्वी की सतह का लगभग 70 प्रतिशत भाग पानी से ढका हुआ है। यह तालाबों, झीलों, नदियों, झरनों, समुद्रों, महासागरों और भूजल में पाया जाता है।

Card 7Hydrosphere

What is the hydrosphere?

Answer

The hydrosphere includes all the water on Earth, such as ponds, lakes, rivers, springs, seas, oceans, and groundwater.

Card 8जलमण्डल

जलमण्डल क्या है?

Answer

जलमंडल में पृथ्वी पर मौजूद सभी पानी शामिल हैं, जैसे तालाब, झीलें, नदियाँ, झरने, समुद्र, महासागर और भूजल।

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Frequently Asked Questions

What are the important topics in Our Home: Earth, a Unique Life Sustaining Planet for CBSE Class 8 Science?
Our Home: Earth, a Unique Life Sustaining Planet covers several key topics that are frequently asked in CBSE Class 8 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Our Home: Earth, a Unique Life Sustaining Planet — CBSE Class 8 Science?
Understand the core concepts first, then work through the 44 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 80 flashcards for Our Home: Earth, a Unique Life Sustaining Planet covering key definitions, formulas, and concepts. Use them daily for 10–15 minutes for best results.

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