1. Cycles of Life

2. Water Cycle
The continuous movement of water between Earth’s surface and the air, changing from liquid to gas to liquid.

3. Evaporation
Liquid changes to a gas

4. Condensation
Gas changes to a liquid

5. Any form of water particles- rain, sleet, snow, or hail
Precipitation
Any form of water particles- rain, sleet, snow, or hail

6. Water Vapor
Water in its gas state

7. Watershed
An area on which water flows downhill to a common stream, lake, or river

8. The water that flows downhill to a common stream, lake, or river
Runoff
The water that flows downhill to a common stream, lake, or river

9. The Carbon Cycle
The continuous transfer of carbon between the atmosphere and living things.

10. How does carbon enter the air?
When plants and animals decay
When animals breathe out
When fossil fuels are burned (car exhaust)

11. How do plants use carbon?
Plants use carbon from carbon dioxide to make sugars, starches, and protein.

12. What happens to the carbon when living things die?
Turned into carbon dioxide by decomposers OR stored as fossil fuels.

13. How do animals use carbon?
Animals use the carbon in sugars, starches, and proteins to make their own body chemicals.

14. Why do you need nitrogen?
To make the parts of your body such as muscles, nerves, skin, bones, blood, and digestive juices.

15. Air is made up of _____% nitrogen.78

16. Animals get nitrogen by eating proteins.
Plants get nitrogen by the soil.

17. Nitrogen moves between the air, soil, plants, and animals
Nitrogen Cycle
Nitrogen moves between the air, soil, plants, and animals

18. Name some substances that contain nitrogen.
Nitrates and nitrites

19. Organisms that recycle matter from dead organisms
Decomposers
Organisms that recycle matter from dead organisms

20. Substances used to add minerals to the soil.
Fertilizers
Substances used to add minerals to the soil.

21. Inexhaustible Resource
Will never run out
Example: Sun

22. Examples: paper, metals, glass
Exhaustible Resource
Can eventually run out
Examples: paper, metals, glass

23. Raw Materials The building blocks of products
Examples: Wood, metal, sand, oil

24. Nonrenewable Resources
Can eventually be all used up
Can’t reuse
Examples: Oil, metals

25. Can be replaced within time
Renewable Resources
Can be replaced within time
Examples: Paper