Class 8
Science
Chapter 13
Curiosity (latest NCERT)
Our Home: Earth, a Unique Life Sustaining Planet
Free NCERT practice questions for Class 8 Science, Chapter 13 — 83 questions across MCQs, short-answer, long-answer and more. Download a printable PDF worksheet in seconds. No signup, no ads, no paywall.
Sample questions from this chapter
Here are 6 real questions students will encounter when they generate a worksheet for this chapter. Every question includes the answer.
MCQ
Medium
1 mark
The region around the Sun where temperatures allow water to exist as a liquid is called the:
(a) Hot zone
(b) Cold zone
(c) Habitable (Goldilocks) zone
(d) Asteroid belt
Answer: Habitable (Goldilocks) zone
Short Answer
Medium
3 marks
List FOUR features that make Earth uniquely able to support life.
Answer: • Right distance from the Sun — in the habitable (Goldilocks) zone.
• Nearly circular orbit — temperature stays steady.
• 'Just right' gravity — holds the atmosphere; doesn't crush life.
• Atmosphere with ozone — blocks UV; magnetic field — blocks high-energy particles.
Fill in the Blank
Medium
1 mark
Earth orbits the Sun at a distance where water can exist in liquid form — this region is called the __________ zone.
Answer: habitable (Goldilocks)
Very Short
Medium
1 mark
Why is Earth's nearly circular orbit important?
Answer: It ensures the Earth is not too hot or too cold during any part of the year.
True / False
Medium
1 mark
State True or False: Asexual reproduction produces offspring with new features.
Answer: False. Asexual reproduction produces IDENTICAL offspring; sexual reproduction gives new features.
Long Answer
Hard
5 marks
Explain why the Earth is described as a 'unique life-sustaining planet'. List FIVE features that make this possible.
Answer: • 1) Habitable (Goldilocks) zone: Earth is at the right distance from the Sun so water can exist as a liquid.
• 2) Nearly circular orbit: temperature does not swing wildly during the year.
• 3) Just-right gravity: it holds the atmosphere but doesn't crush living creatures.
• 4) Ozone layer: blocks harmful UV rays in the atmosphere.
• 5) Magnetic field: shields us from high-energy particles from space.
• These features together allow the atmosphere, water and life to exist.
Generate a worksheet with all 83 questions →
Frequently asked questions
What is included in Class 8 Science Chapter 13 (Our Home: Earth, a Unique Life Sustaining Planet)?
This chapter has 83 NCERT-aligned practice questions covering all the concepts from the Curiosity textbook's Chapter 13. Questions span easy, medium and hard levels across 8 different formats so students get a balanced practice set.
Are these questions based on the new NCERT Curiosity textbook?
Yes. Every question on Practico for Class 8 Science is mapped directly to the latest NCERT Curiosity textbook (the one CBSE schools are using now). The chapter numbers and chapter titles match the textbook exactly.
How many questions can I practice from this chapter?
83 questions are available right now. You can pick how many you want at a time — generate 10 quick MCQs, a 30-question worksheet, or a full exam-style mix. Each generation gives you a different random set.
Can I download a free PDF worksheet for Our Home: Earth, a Unique Life Sustaining Planet?
Yes — completely free, no sign-up required. Pick this chapter, choose the number of questions and types you want, and download a printable PDF (with or without answers) in one click.
What question types are available?
This chapter has assertion reason, fill blank, long, match, mcq, short, true false, very short. You can mix any combination, or filter to just the type you want to practice — for example, only numericals to drill calculation, or only short-answer questions for exam revision.
Is Practico aligned with CBSE exam patterns?
Yes. Practico questions are tagged by marks (1, 2, 3, 5) and by difficulty (Easy/Medium/Hard) just like CBSE exam blueprints, so you can build a worksheet that mirrors a real unit test or annual exam.