Class 8 Science Chapter 13: Our Home: Earth, a Unique Life Sustaining Planet — Important Questions & Mock Tests
Practice Our Home: Earth, a Unique Life Sustaining Planet topic-wise important questions, MCQs and 1, 2, 3 and 5 mark questions for CBSE revision.
300 Questions 22 Topics MCQs: 100 1 Mark: 50 2 Mark: 50 3 Mark: 50 5 Mark: 50
Topic-wise important and practice questions
Review question distribution across chapter topics for MCQs, 1 Mark questions, 2 Mark questions, 3 Mark questions, 5 Mark questions.
| Topic | MCQ | 1 Mark | 2 Mark | 3 Mark | 5 Mark | Total |
|---|---|---|---|---|---|---|
| Importance of Liquid Water for Life | 5 | 6 | 5 | 5 | 6 | 27 |
| Plant Greenhouse vs Atmospheric Greenhouse Effect | 5 | 4 | 4 | 5 | 4 | 22 |
| Greenhouse Analogy | 5 | 5 | 4 | 4 | 3 | 21 |
| Search for Past Life on Mars | 5 | 4 | 4 | 4 | 4 | 21 |
| Goldilocks or Habitable Zone | 5 | 3 | 3 | 4 | 5 | 20 |
| Earth as the Blue Planet | 5 | 1 | 4 | 4 | 3 | 17 |
| Earth's Crust | 5 | 3 | 3 | 3 | 3 | 17 |
| Terrestrial Planets | 5 | 3 | 2 | 3 | 3 | 16 |
| Conditions on Mars | 5 | 1 | 1 | 2 | 4 | 13 |
| Earth's Magnetic Field and Compass Direction | 5 | 1 | 2 | 2 | 3 | 13 |
| Ozone Layer and Ultraviolet Radiation | 5 | 2 | 2 | 2 | 2 | 13 |
| Venus as the Hottest Planet | 5 | 4 | 2 | 1 | 1 | 13 |
| Earth's Magnetic Field and Protection from Solar Radiation | 5 | 1 | 2 | 2 | 2 | 12 |
| Why Earth Is Unique for Life | 5 | 2 | 2 | 2 | 1 | 12 |
| Atmosphere of Mars | 5 | 1 | 2 | 2 | 1 | 11 |
| Greenhouse Effect | 5 | 3 | 1 | 1 | 1 | 11 |
| Liquid Water and Habitability | 5 | 1 | 3 | 1 | 1 | 11 |
| Habitable Zone and Surface Water | 5 | 1 | 1 | 1 | 1 | 9 |
| Earth's Gravity and Atmospheric Retention | 5 | 1 | 1 | 0 | 0 | 7 |
| Earth's Surface Water | 5 | 1 | 0 | 0 | 0 | 6 |
| Human Settlement on Mars | 0 | 1 | 1 | 1 | 1 | 4 |
| Requirements for Life on Another Planet | 0 | 1 | 1 | 1 | 1 | 4 |