Christine MBARI Biogeochemical Lesson PPT

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Information about Christine MBARI Biogeochemical Lesson PPT

Published on February 6, 2008

Author: Vilfrid



Biogeochemical Cycles in your Classroom :  Biogeochemical Cycles in your Classroom Biogeochemical Cycles in your Classroom:  Biogeochemical Cycles in your Classroom Summary Students will discover and discuss the component pieces of the biogeochemical cycle. Key Concepts Matter is what all things are made of. By matter we mean: elements (carbon, nitrogen, oxygen) or molecules (water). Matter is neither created nor destroyed. All matter cycles through the earth cycles. Biogeochemical cycles: the movement (or cycling) of matter through a system. In general we can subdivide the Earth system into the atmosphere, hydrosphere, lithosphere, and biosphere. Biogeochemical cycles are part of the larger cycles that describe the functioning of the whole Earth (not just the surface parts). The Geology cycle consists of the tectonic cycle, the rock cycle, the hydrologic cycle and the biogeochemical cycle. The Carbon cycle is one of the most important to humans because it is important to our existence: --one of the primary elements forming human tissues --necessary to plants, the basis of human food and because it is important to the climate system which sets the background for our environment: -- carbon dioxide (CO 2 ) and methane (CH 4 ) are greenhouse gases which help set global temperatures. What is biogeochemical?:  What is biogeochemical? BIO-GEO-CHEMICAL Talk about a word that describes everything on Earth. The cycles we discuss will all fall into the big group of biogeochemical cycles. Let's break it down… BIO: Biology. Life. Living things. These cycles all play a role in the lives of living things. The cycles might limit the organisms of Earth or they might happen along side, changing the environment. GEO: Earth. Rocks. Land. This refers to the non-living processes at work. Oxygen cycles through many systems. It's in you and plants for the 'bio' part of the cycle. Oxygen might also wind up in rocks… The 'geo' part of its cycle. CHEMICAL: Molecules. Reactions. Atoms. All cycles include these small pathways. Complete molecules are not always passed from one point to the next. Sometimes chemical reactions take place that changes the molecules and locations of the atoms. Think about oxidation as an example of the 'chemical' part of these pathways. To sum it up, these pathways are all made of different biological, geological, and chemical processes that help make the world go 'round and life exist on Earth. Slide4:  Generalized Biogeochemical Cycle Basic Carbon cycle: :  Basic Carbon cycle: The Carbon Cycle The Carbon Cycle – The Box Model:  The Carbon Cycle – The Box Model : Slide7:  The Hydrologic cycle or The Water cycle The Hydrologic cycle or The Water cycle The Box Model :  The Hydrologic cycle or The Water cycle The Box Model The Nitrogen Cycle:                                                                                                                                                                                 The Nitrogen Cycle Make Your Models Sing:  Make Your Models Sing Use the Magic of Music to help your students learn the Magic of the Models. There are thousands of science songs available. Try music with models. Don’t Panic! Explore The Banana Slug String Band Web Site: For a completely useful list of singable songs try:

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