Environmental Science: Section 2-1 Cycles of Matter

1. Environmental Science: Section 2-1Cycles of Matter

2. 1 The movement of water between the oceans, atmosphere, and living things is the __________________________. • water cycle

3. 2 The changing of water from liquid to vapor is called ________________________. • Evaporation

4. 3 During _______________, water vapor cools and returns to a liquid state. • Condensation

5. 4 • Precipitation Water that falls from the atmosphere to the land and oceans is called ___________________.

6. 5 Precipitation that falls on land and then flows into streams, rivers, and lakes is called _________________________. • 5. runoff

7. 6 Precipitation that seeps into the ground and is stored among rocks is called ________________. . groundwater

8. 7 Watervapor is released by plants and returned to the environment in a process called ____________________. • 7. transpiration

9. 8 Name three reasons water is needed for life on Earth. • transports nutrients • transports wastes • regulates temperature

10. 9 What are organic molecules? • C : molecules that contain carbon

11. 10 How do animals get carbon? • 10. D : by eating plants

12. 11 In what process is carbon returned to the environment? • C : respiration

13. 12 What happens to carbon dioxide during photosynthesis? • plants use it to make sugar

14. 13 What happens during decomposition? • fungi and bacteria break down organic matter

15. 14 What happens during combustion? A substance burns

16. 15 The movement of nitrogen between the environment and living things is called the __________________. • nitrogen cycle

17. 16 The process in which bacteria in the soil change nitrogen gas into forms plants can use is called ____________________. • nitrogen fixation

18. 17 Why do organisms need nitrogen? • to build proteins and DNA for new cells

19. 18 Name two things that perform nitrogen fixation. • decomposition (bacteria and fungus) • lightning

20. 19 How do plants get the nitrogen they need? plant roots take up nitrogen from the soil

21. 20 How do animals get the nitrogen they need? by eating plants or organisms that eat plants

22. The End ….52 dead cows from one lightning strike