# Science — NCERT Class 8 — CBSE (NCERT textbooks) — Shishya school context > Subject page: https://shishya.in/schooling/cbse/class-8/science · class: https://shishya.in/schooling/cbse/class-8 (context: https://shishya.in/schooling/cbse/class-8/context.md) · data as of 2026-10-11 (IST). Free to cite; link back to the subject page. > Honesty: Shishya never reproduces, summarises or translates textbook text — read a chapter at its official link. Practice questions are Shishya's own, written by AI and answer-checked before they are shown; they are not NCERT exercises, not board questions and not previous-year questions. A chapter marked "not ready yet" has no Shishya notes or practice, and its Shishya page is not linked here. > Children: Class 1-7 school pages have no chat tutor, offer no sign-in and ask no child to create an account. On Class 8-12 pages a student may sign in to save practice to an account — for students 13 and above; no school page asks anyone their age or role — and anyone can read a chapter, take its practice where the chapter has one and ask the AI tutor about it without signing in; the tutor says it is an AI and answers study questions only, with a daily message limit. The 5-question practice on the chapter pages that have it needs no account, and no result is saved to any account or profile from it: Shishya records only an anonymous usage event (which chapter was practised and the score) — on Class 8-12 pages with the same cookie-based analytics every page view sends, on Class 1-7 pages with no cookie, account or other visitor identifier. A signed-in student's own practice set is saved to that account. ## Science - Book: Curiosity — https://ncert.nic.in/textbook.php?hecu1=0-13 (NCERT also lists 22 other-language editions) - Chapters (13; 13 with Shishya notes, 13 with answer-checked practice of 5+ questions): - Chapter 1 — Exploring the Investigative World of Science — Shishya notes + 39 answer-checked practice questions: https://shishya.in/schooling/cbse/class-8/science/exploring-the-investigative-world-of-science · official PDF: https://ncert.nic.in/textbook/pdf/hecu101.pdf - Chapter 2 — The Invisible Living World: Beyond Our Naked Eye — Shishya notes + 40 answer-checked practice questions: https://shishya.in/schooling/cbse/class-8/science/the-invisible-living-world-beyond-our-naked-eye · official PDF: https://ncert.nic.in/textbook/pdf/hecu102.pdf - Chapter 3 — Health: The Ultimate Treasure — Shishya notes + 40 answer-checked practice questions: https://shishya.in/schooling/cbse/class-8/science/health-the-ultimate-treasure · official PDF: https://ncert.nic.in/textbook/pdf/hecu103.pdf - Chapter 4 — Electricity: Magnetic and Heating Effects — Shishya notes + 39 answer-checked practice questions: https://shishya.in/schooling/cbse/class-8/science/electricity-magnetic-and-heating-effects · official PDF: https://ncert.nic.in/textbook/pdf/hecu104.pdf - Chapter 5 — Exploring Forces — Shishya notes + 36 answer-checked practice questions: https://shishya.in/schooling/cbse/class-8/science/exploring-forces · official PDF: https://ncert.nic.in/textbook/pdf/hecu105.pdf - Chapter 6 — Pressure, Winds, Storms, and Cyclones — Shishya notes + 40 answer-checked practice questions: https://shishya.in/schooling/cbse/class-8/science/pressure-winds-storms-and-cyclones · official PDF: https://ncert.nic.in/textbook/pdf/hecu106.pdf - Chapter 7 — Particulate Nature of Matter — Shishya notes + 39 answer-checked practice questions: https://shishya.in/schooling/cbse/class-8/science/particulate-nature-of-matter · official PDF: https://ncert.nic.in/textbook/pdf/hecu107.pdf - Chapter 8 — Nature of Matter: Elements, Compounds, and Mixtures — Shishya notes + 40 answer-checked practice questions: https://shishya.in/schooling/cbse/class-8/science/nature-of-matter-elements-compounds-and-mixtures · official PDF: https://ncert.nic.in/textbook/pdf/hecu108.pdf - Chapter 9 — The Amazing World of Solutes, Solvents, and Solutions — Shishya notes + 40 answer-checked practice questions: https://shishya.in/schooling/cbse/class-8/science/the-amazing-world-of-solutes-solvents-and-solutions · official PDF: https://ncert.nic.in/textbook/pdf/hecu109.pdf - Chapter 10 — Light: Mirrors and Lenses — Shishya notes + 47 answer-checked practice questions: https://shishya.in/schooling/cbse/class-8/science/light-mirrors-and-lenses · official PDF: https://ncert.nic.in/textbook/pdf/hecu110.pdf - Chapter 11 — Keeping Time with the Skies — Shishya notes + 39 answer-checked practice questions: https://shishya.in/schooling/cbse/class-8/science/keeping-time-with-the-skies · official PDF: https://ncert.nic.in/textbook/pdf/hecu111.pdf - Chapter 12 — How Nature Works in Harmony — Shishya notes + 40 answer-checked practice questions: https://shishya.in/schooling/cbse/class-8/science/how-nature-works-in-harmony · official PDF: https://ncert.nic.in/textbook/pdf/hecu112.pdf - Chapter 13 — Our Home: Earth, a Unique Life Sustaining Planet — Shishya notes + 40 answer-checked practice questions: https://shishya.in/schooling/cbse/class-8/science/our-home-earth-a-unique-life-sustaining-planet · official PDF: https://ncert.nic.in/textbook/pdf/hecu113.pdf - Shishya content last updated: 2026-09-26 ## Other subjects in this class - Hindi: https://shishya.in/schooling/cbse/class-8/hindi - English: https://shishya.in/schooling/cbse/class-8/english - Mathematics: https://shishya.in/schooling/cbse/class-8/mathematics - Social Science: https://shishya.in/schooling/cbse/class-8/social-science - Sanskrit: https://shishya.in/schooling/cbse/class-8/sanskrit - Arts: https://shishya.in/schooling/cbse/class-8/arts - Physical Education and Well Being: https://shishya.in/schooling/cbse/class-8/physical-education-and-well-being - Vocational Education: https://shishya.in/schooling/cbse/class-8/vocational-education - Urdu: https://shishya.in/schooling/cbse/class-8/urdu