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Earth's Natural Cycles: Water, CO2/O2, Nitrogen

Explore the vital water, carbon dioxide/oxygen, and nitrogen cycles that sustain life on Earth. Learn about the processes of condensation, evaporation, precipitation, photosynthesis, and decomposition. Discover the interconnectedness of these cycles and their importance for the environment.

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Earth's Natural Cycles: Water, CO2/O2, Nitrogen

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  1. Earth’s Natural Cycles Water (H2O) Cycle Carbon Dioxide/Oxygen (CO2/O2) Cycle Nitrogen Cycle

  2. Water (H2O) Cycle • Water cycle-the movement of water from Earth’s surface into the atmosphere and back to the surface again. • Condensation • Precipitation • Evaporation • Transpiration

  3. Water -H20- Cycle • is the movement of water in the environment • 75% of the Earth’s surface is water. • Most of the Earth’s fresh water is found in frozen polar ice caps and glaciers. • 1% (of the 75%) is freshwater • All the water on Earth today is the same water that was here billions of years ago. • Condensation-water vapor turns back into liquid water in the process of condensation. • Precipitation - any form of water (rain, sleet, snow, etc…) that falls from the clouds • Evaporation- process by which a liquid changes into a gas. • Transpiration- The loss of moisture from the leaves of plants.

  4. Carbon Dioxide/Oxygen (CO2/O2) Cycle • Carbon Dioxide- An odorless gas in the air which is made out of carbon and oxygen – CO2. • Carbon dioxide is stored mostly in oceans (90% of oxygen in the atmosphere comes from photosynthesis of microscopic plantlike organisms in the ocean) and the atmosphere – it is found in bodies of dead organisms and is a by-product of combustion. • Carbon dioxide and oxygen stay in balance through the process of photosynthesis and respiration • Green plants- take in carbon dioxide and release oxygen

  5. Carbon Dioxide/Oxygen Cycle Oxygen Sun Plants Rabbit Hawk Carbon Dioxide

  6. Nitrogen Cycle -- the cycle in which nitrogen gas is changed into forms of nitrogen that plants can use . -- 78% of the gas in the atmosphere is Nitrogen When we talk about the Nitrogen Cycle we use words like…. ….fungus (mushrooms), bacteria, decay and decompose/decomposers, breaking down animal waste and plant matter, once living organisms, composting/compost piles and bins

  7. Nitrogen Cycle Sun Plants Rabbit Hawk Decomposers pictures from Google search

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