Exploring the Investigative World of Science — Flashcards
CBSE · Class 8 · Science
64 flashcards for Exploring the Investigative World of Science (CBSE Class 8 Science) to test yourself on key terms and facts.
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Why is one side of a puri thinner than the other?
Answer
A puri can puff unevenly because the dough, oil temperature, and way it is dropped into the oil affect how steam forms and spreads inside it. This is a scientific question that needs careful observati…
पुरी का एक किनारा दूसरे किनारे से पतला क्यों होता है?
Answer
एक पूरी असमान रूप से फूल सकती है क्योंकि आटा, तेल का तापमान और जिस तरह से इसे तेल में डाला जाता है, वह प्रभावित करता है कि भाप कैसे बनती है और उसके अंदर कैसे फैलती है। यह एक वैज्ञानिक प्रश्न है जिसके …
Why does a phulka swell when put directly on a flame?
Answer
Heat makes the water inside the dough turn into steam. The steam pushes the dough outward, so the phulka swells.
आग पर सीधे रखने पर फुलका क्यों फूल जाता है?
Answer
गर्मी से आटे के अंदर का पानी भाप में बदल जाता है। भाप आटे को बाहर की ओर धकेलती है, जिससे फुलका फूल जाता है।…
What should be changed one at a time in a scientific experiment?
Answer
Only one thing should be changed at a time while all other conditions stay the same. This makes it easier to find out which change caused the result.
वैज्ञानिक प्रयोग में एक बार में क्या बदलना चाहिए?
Answer
एक बार में केवल एक ही चीज़ को बदलना चाहिए जबकि अन्य सभी स्थितियाँ समान रहें। इससे यह पता लगाना आसान हो जाता है कि किस परिवर्तन के कारण परिणाम आया।…
What can be observed in the puri experiment?
Answer
The puri puffing up can be observed as yes or no. The time taken to puff up can also be measured in seconds.
पुरी प्रयोग में क्या देखा जा सकता है?
Answer
पुरी फुलाने को हाँ या ना के रूप में देखा जा सकता है। फुलाने में लगने वाले समय को सेकंड में भी मापा जा सकता है।…
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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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