Earth, Moon, and the Sun
CBSE · Class 7 · Science
Flashcards for Earth, Moon, and the Sun — CBSE Class 7 Science. Quick Q&A cards covering key concepts, definitions, and formulas.
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Why does the Sun appear to rise in the east and set in the west?
Answer
The Earth rotates from west to east. Because of this rotation, the Sun only appears to move across the sky from east to west.
सूर्य पूर्व में उगता और पश्चिम में अस्त क्यों होता है?
Answer
पृथ्वी पश्चिम से पूर्व की ओर घूमती है। इस घूर्णन के कारण सूर्य आकाश में केवल पूर्व से पश्चिम की ओर ही घूमता हुआ दिखाई देता है।…
What causes day and night on Earth?
Answer
The Earth's rotation causes the day-night cycle. The side of Earth facing the Sun has day, and the side away from the Sun has night.
पृथ्वी पर दिन और रात का क्या कारण है?
Answer
पृथ्वी के घूर्णन से दिन-रात का चक्र बनता है। पृथ्वी का सूर्य की ओर वाला भाग दिन होता है और सूर्य से दूर वाला भाग रात होता है।…
How long does the Earth take to complete one rotation?
Answer
The Earth completes one rotation in about 24 hours.
पृथ्वी को एक चक्कर पूरा करने में कितना समय लगता है?
Answer
पृथ्वी लगभग 24 घंटे में एक चक्कर पूरा करती है।…
What is rotation?
Answer
Rotation is the motion of an object in which all its parts move in circles around an imaginary line that passes through it. This line is called the axis of rotation.
घूर्णन क्या है?
Answer
परिभ्रमण (Rotation) किसी वस्तु की वह गति है जिसमें उसके सभी भाग उस से गुजरने वाली एक काल्पनिक रेखा के चारों ओर वृत्ताकार गति करते हैं। इस रेखा को परिभ्रमण अक्ष (Axis of rotation) कहते हैं।…
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
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