Class 9
Science
Chapter 13
Exploration (latest NCERT)
Earth as a System: Energy, Matter, and Life
Free NCERT practice questions for Class 9 Science, Chapter 13 — 60 questions across MCQs, short-answer, long-answer and more. Download a printable PDF worksheet in seconds. No signup, no ads, no paywall.
What this chapter covers
Class 9 Science Chapter 13 'Earth as a System: Energy, Matter and Life' from NCERT Exploration views the planet as interacting spheres. Students study the atmosphere's layered structure, the water cycle, the carbon cycle and the nitrogen cycle, and trace how energy from the Sun drives weather and life. Climate change, ozone depletion and pollution are studied as disturbances to these cycles.
Key topics in this chapter
- Spheres of Earth: atmosphere, hydrosphere, lithosphere, biosphere
- Layers of the atmosphere
- Water, carbon and nitrogen cycles
- Energy flow from the Sun
- Climate change and pollution
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
Most weather processes occur in which layer of the atmosphere?
(a) Stratosphere
(b) Troposphere
(c) Mesosphere
(d) Thermosphere
Answer: Troposphere
Short Answer
Medium
3 marks
Why is the troposphere responsible for most weather phenomena?
Answer: • It is the lowest layer of the atmosphere, closest to the surface.
• It contains most of the air and water vapour.
• Processes like evaporation, condensation and precipitation occur here.
Fill in the Blank
Medium
1 mark
Matter and energy cycle between the living (biotic) and the non-living (__________) systems.
Answer: abiotic
Very Short
Medium
1 mark
Name three uses of atmospheric oxygen.
Answer: Combustion, respiration and oxide formation.
True / False
Medium
1 mark
State True or False: Oxygen is restored to the atmosphere mainly by respiration.
Answer: False. Oxygen is restored mainly by photosynthesis.
Long Answer
Hard
5 marks
Explain the carbon cycle, tracing carbon from the atmosphere and back.
Answer: • Plants take in CO₂ from the air for photosynthesis.
• Animals eat plants, taking in the carbon.
• Respiration by plants and animals releases CO₂ back.
• Burning of fuels (combustion) and decay of dead matter also return CO₂ to the air.
• This keeps carbon cycling between the atmosphere and living things.
Generate a worksheet with all 60 questions →
Frequently asked questions
What is included in Class 9 Science Chapter 13 (Earth as a System: Energy, Matter, and Life)?
This chapter has 60 NCERT-aligned practice questions covering all the concepts from the Exploration textbook's Chapter 13. Questions span easy, medium and hard levels across 9 different formats so students get a balanced practice set.
Are these questions based on the new NCERT Exploration textbook?
Yes. Every question on Practico for Class 9 Science is mapped directly to the latest NCERT Exploration 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?
60 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 Earth as a System: Energy, Matter, and Life?
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, image, 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.