The Four Subsystems of the Planet Earth

1. The Four Subsystems of the Earth Earth and Life Science Grade 11

3. Hydrosphere • The water portion of the Earth • Dynamic mass of water that is continually on the move • Ocean – 97.2 % • Freshwater – streams, lakes, glaciers • Water – component of all living things

5. Atmosphere • Earth’s gaseous envelope • A very shallow layer • 90% - occur just within 16 kilometers of Earth’s surface • Protect us from the sun’s intense heat and ultraviolet radiation

7. Geosphere • The solid part of the Earth • Extends from surface to the center of the planet • Soil – the material at Earth’s surface that supports the growth of plants

9. Biosphere • Includes all life on Earth Earth • The only planet with life • Presence of water and oxygen

12. QUIZ 1.The water portion of the Earth. Hydrosphere Biosphere Atmosphere Geosphere

13. QUIZ 2. The solid part of the Earth? Hydrosphere Biosphere Atmosphere Geosphere

14. QUIZ 3. It protects us from the sun’s heat and radiation? Lithosphere Atmosphere Biosphere Hydrosphere

15. QUIZ 4. What makes the earth unique? Only planet with rocks Only planet with ocean Only planet with life Only planet with air

16. QUIZ 5. Which of the following is a freshwater? ocean sea bay lake

17. ANSWERS

18. QUIZ 1.The water portion of the Earth. Hydrosphere Hydrosphere A A A

19. QUIZ 2. The solid part of the Earth? A A A Geosphere Geosphere

20. QUIZ 3. It protects us from the sun’s heat and radiation? Atmosphere A Atmosphere A A

21. QUIZ 4. What makes the earth unique? A A Only planet with life Only planet with life A

22. QUIZ 5. Which of the following is a freshwater? ocean sea lake bay lake