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BIOGEOCHEMICAL CYCLES

Discover the intricate process of the water cycle on Earth, from evaporation to precipitation, showcasing the vital role water plays in sustaining life. Explore concepts like transpiration, infiltration, and groundwater to deepen your understanding.

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BIOGEOCHEMICAL CYCLES

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  1. BIOGEOCHEMICAL CYCLES

  2. Biogeochemical Big word; simple idea • Bio = life • Geo = earth • Chemical = substance So biogeochemical = substances involved with life on earth.

  3. Water Cycle

  4. Water Is Everywhere • 75% of the earth’s surface is covered with water. • All living things contain water. • There is water in the atmosphere.

  5. Water on the Move • Water continually cycles from the earth to the atmosphere and back again.

  6. Evaporation • Water evaporates (changes from a liquid to a gas).

  7. Condensation • Water condenses (changes from a gas to a liquid).

  8. Precipitation • Water returns to earth’s surface in the form of rain, sleet, snow or hail.

  9. The Very Simple Version Condensation Precipitation Evaporation

  10. It’s more complicated than that.

  11. Transpiration • Plants return water to the atmosphere. Plant loses water through leaves Plant sucks in water through roots

  12. Perspiration • Animals return water to the atmosphere when they sweat, pant, breathe, etc.

  13. Infiltration • Water goes into the ground. It filters through soil, rocks, etc. Diagram courtesy of the U.S. Geological Survey

  14. Runoff • Some water moves along the surface of the ground collecting in low areas. Diagram courtesy of the U.S. Geological Survey

  15. Ground Water • Water filters into soil and rock until it comes to rocks it cannot pass through. • Water may fill spaces in rocks and soil. • An aquifer is a pool of underground water.

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