NCERT Class 8 Science Curiosity: Chapter 13 — Our Home: Earth, a Unique Life Sustaining Planet
This chapter, the final one in the Curiosity textbook, explores why Earth is a unique planet capable of sustaining life. It highlights Earth's position orbiting the Sun and its diverse landscapes, from mountains to oceans. Satellite images, like the one from ISRO, provide valuable data for studying Earth's surface and oceans. The chapter emphasizes that life exists on a very thin layer of Earth's surface, the crust, which is compared to the thin skin of an apple. This delicate layer is crucial for supporting all known forms of life, making Earth a truly special and unique home in the universe. The chapter encourages critical thinking about the conditions necessary for life.
Quick info
| Board | CBSE / NCERT |
|---|---|
| Class | Class 8 |
| Subject | Science |
| Book | Curiosity |
| Chapter | Chapter 13 — Our Home: Earth, a Unique Life Sustaining Planet |
| Language | English |
| PDF type | NCERT Textbook |
| Session | CBSE 2026 |
| Reading time | 2 minutes |
| Word count | 266 |
Learning outcomes
- Understand why Earth is considered a unique planet.
- Recognize the thin layer of Earth's crust that supports life.
- Appreciate the diversity of landscapes on Earth.
- Learn about the use of satellite imagery in studying Earth.
- Develop critical thinking about the conditions necessary for life.
Vocabulary
| Word | Meaning |
|---|---|
| Sustaining | Maintaining or supporting life. |
| Orbiting | Moving in a curved path around a celestial object. |
| Diverse | Showing a great deal of variety; very different. |
| Landscapes | All the visible features of an area of land. |
| Satellites | Artificial bodies placed in orbit around the Earth or another planet. |
| Mosaic | A picture or pattern produced by arranging together small colored pieces of hard material. |
| Organisms | An individual animal, plant, or single-celled life form. |
| Crust | The outer layer of the Earth. |
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Practice questions
- What makes Earth unique compared to other planets? Answer: Earth is unique because it is the only planet known to sustain life in all its forms.
- Where on Earth does all life exist? Answer: All life on Earth exists on a very thin layer on the surface called the crust.
- How is the Earth's crust compared to an apple? Answer: The Earth's crust is compared to the thin skin of an apple to show its relative thinness compared to the planet's size.
- What kind of information can satellite images provide? Answer: Satellite images can help study plants, tiny ocean organisms, ocean temperature, oil spills, and wind direction.
Frequently asked questions
What is the main focus of Chapter 13 of NCERT Class 8 Science Curiosity?
Chapter 13 focuses on why Earth is a unique planet that sustains life and the conditions that make it so.
What is the significance of Earth's crust mentioned in the chapter?
The Earth's crust is highlighted as a very thin, delicate layer on the planet's surface where all life exists and thrives.
How are satellite images used to study Earth?
Satellite images help scientists study plants, ocean organisms, temperature, oil spills, and wind direction, providing valuable information about our planet.
What analogy is used to explain the thinness of Earth's crust?
The chapter compares the Earth's crust to the thin skin of an apple to illustrate its relative thinness compared to the planet's overall size.
What does the chapter suggest about Earth's place in the universe?
The chapter suggests that Earth is unlike any other place in the known universe due to its ability to sustain diverse life.
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Topics covered
NCERT Class 8 Science — Curiosity — Chapter 13 — Our Home: Earth, a Unique Life Sustaining Planet. Verified by NCERT Help Editorial Team. Reviewed on 29 Jul 2026. Last updated 10 Aug 2026.