StudyMatic
🧾 CBSE · Class 8

Class 8 Science: Our Home Earth A Unique Life Sustaining Planet Worksheet (with Answers)

A free, print-ready worksheet on Our Home Earth A Unique Life Sustaining Planet for CBSE Class 8 Science, with a matching answer key. Use the sample below, or build your own with the exact mix of questions you need — no login, no ads.

Generate your own worksheet for this chapter →Read the chapter notes

Sample worksheet

7 of 17 questions from this chapter. Generate your own for the full set, more variations, and a clean print layout.

  1. 1. The layer of air around the Earth is the:
    • (a) hydrosphere
    • (b) atmosphere
    • (c) lithosphere
    • (d) biosphere
  2. 2. Which gas in the air is essential for living things to breathe?
    • (a) nitrogen
    • (b) carbon dioxide
    • (c) helium
    • (d) oxygen
  3. 3. All the water on the Earth makes up the:
    • (a) lithosphere
    • (b) hydrosphere
    • (c) atmosphere
    • (d) biosphere
  4. 4. The solid land and rocky layer of the Earth is the:
    • (a) lithosphere
    • (b) hydrosphere
    • (c) atmosphere
    • (d) ozone
  5. 5. Why is Earth able to support life?
  6. 6. Name the four spheres of the Earth.
  7. 7. Explain why the Earth is a unique life-sustaining planet.
View answers
  1. 1. (b) atmosphere — The atmosphere is the blanket of air.
  2. 2. (d) oxygen — Oxygen is needed for respiration.
  3. 3. (b) hydrosphere — Water bodies form the hydrosphere.
  4. 4. (a) lithosphere — The lithosphere is the solid land.
  5. 5. It has a suitable temperature for liquid water, an oxygen-rich atmosphere and a protective ozone layer.
  6. 6. Atmosphere, hydrosphere, lithosphere and biosphere.
  7. 7. Earth is special because several conditions for life occur together. It lies at the right distance from the Sun, so it is neither too hot nor too cold and water can remain liquid — vital for living things. Its atmosphere contains oxygen for breathing and carbon dioxide for plants, and the ozone layer high above blocks harmful rays from the Sun. The presence of liquid water, a breathable atmosphere and a suitable temperature, together with soil and nutrients, makes Earth able to support life — a combination not found on the other planets we know.
Build the full worksheet →

How it works

Every question is drawn from StudyMatic’s own Science bank for Our Home Earth A Unique Life Sustaining Planet — nothing is auto-generated or invented. Pick how many of each type you want, add your own questions if you like, choose 1–4 paper sets for anti-cheating, and print the worksheet and answer key separately or save them as PDF.

More Class 8 Science worksheets

Exploring the Investigative World of ScienceworksheetThe Invisible Living World Beyond Our Naked EyeworksheetHealth The Ultimate TreasureworksheetElectricity Magnetic and Heating EffectsworksheetExploring ForcesworksheetPressure Winds Storms and CyclonesworksheetParticulate Nature of MatterworksheetNature of Matter Elements Compounds and MixturesworksheetThe Amazing World of Solutes Solvents and SolutionsworksheetLight Mirrors and LensesworksheetKeeping Time with the SkiesworksheetHow Nature Works in Harmonyworksheet

All Class 8 Science worksheets →

FAQ

Is this Class 8 Science worksheet on Our Home Earth A Unique Life Sustaining Planet free?
Yes — it is completely free, with no login and no ads. You can print it or save it as a PDF, and generate unlimited variations.
Does the Our Home Earth A Unique Life Sustaining Planet worksheet come with answers?
Yes. Every worksheet has a separate answer key with the correct answers, short explanations and marks, so it is ready for marking.
Can I choose how many questions and which types?
Yes. Open the generator for this chapter and set how many MCQs, short, long and HOTS questions you want; totals and marks update live, and you can swap any single question.
Which board and class is this for?
This worksheet is aligned to CBSE Class 8 Science, chapter “Our Home Earth A Unique Life Sustaining Planet”.