12/10/09 The Carbon Cycle.

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Cycles of Matter:.

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Presentation transcript:

12/10/09 The Carbon Cycle

Catalyst You turn on the tap water and fill a glass of water to drink. Your friend says “Stop! That might be dinosaur urine!” Is your friend right? Why or why not?

Learning Target LT1: I can explain the flow of matter (water cycle and carbon cycle). Agenda: Catalyst What does the flow of matter mean? Global Warming Article Carbon Cycle Diagram Exit Slip

What is matter? Matter is anything that has mass and takes up space. Is your pencil made of matter? Is your desk made of matter? Are humans made of matter?

What is matter? The Law of Conservation of Matter states that matter is not created or destroyed, only rearranged or recycled.

The Carbon Cycle The Carbon Cycle is a complex series of processes through which all of the carbon atoms in the world recycle.

The Carbon Cycle Carbon is important because all life on earth is based on carbon.

The Carbon Cycle All life on earth is based on carbon. Carbon is found in the atmosphere (the air) and oceans as the gas carbon dioxide (CO2). Open burning Atmospheric CO2 Photosynthesis Respiration Fuel Combustion Respiration Fuel Combustion Photosynthesis Dissolved CO2 Respiration Death and decay Death and decay Fossil fuels Section 2.2 Summary – pages 46 - 57

Photosynthesis CO2 is taken out of the air by plants through photosynthesis. Plants breathe in CO2 and breathe out O2.

Cellular Respiration BOTH plants and animals release CO2 into the air through cellular respiration For example: Humans breathe in oxygen and breathe out CO2.

Photosynthesis vs. Cell Respiration CO2 O2 Cell Respiration

Decomposition Decaying plants, animals, and waste decompose after millions of years and turn into fossil fuels.

Human Impact Fossil fuels can be burned by automobiles, releasing carbon back into the atmosphere.

Global Warming Article How does burning fossil fuels change the carbon cycle? (It’s helpful to draw it)

Global Warming Article 2. What parts of the Earth have been absorbing the extra carbon? 3. How does the disruption of the carbon cycle impact the environment? 4. What is the US trying to do about it?