BIOGEOCHEMICAL CYCLES http://www.animationlibrary.com/search/?keywords=recycle Water Cycle Song (1:21 min): http://www.youtube.com/watch?v=Yw275056JtA&feature=related Another Water Cycle Song (2:41 min): http://www.youtube.com/watch?v=maxLwmDxoVI&feature=related
http://www.animationlibrary.com/search/?keywords=recycle. BIOGEOCHEMICAL CYCLES. Water Cycle Song (1:21 min): http://www.youtube.com/watch?v=Yw275056JtA&feature=related Another Water Cycle Song (2:41 min): http://www.youtube.com/watch?v=maxLwmDxoVI&feature=related. See a video clip about - PowerPoint PPT Presentation
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4 elements make up 95% of the body in most organisms
CARBON
HYDROGEN
OXYGEN
NITROGEN
The same molecules are passed around again and again within the biosphere in___________________________BIOGEOCHEMICAL CYCLES
WATER CYCLE= ___________________HYDROLOGIC CYCLE
http://www.urbanrivers.org/water_cycle.html
WHY IS WATER IMPORTANT?Makes up 60-70% of your body
Oxygen and Hydrogen are found in all the ________________________: carbohydrates, proteins,
nucleic acids, lipids
Hydrogen in H2O supplies protons (H+) & electrons for_______________
http://www.lsbu.ac.uk/water/molecule.htm
building blocks of cells
photosynthesis
WHY IS WATER IMPORTANT?
Water is a good _________________Many molecules dissolve in water so itprovides a place for chemical reactionsto happen
Water doesn’t change temperature easily so it helps with________________________
http://www.lsbu.ac.uk/water/molecule.htm
SOLVENT
TEMPERATURE REGULATION
• Evaporation is when the sun heats up water in rivers or lakes or the ocean and turns it into vapor or steam. The water vapor or steam leaves the river, lake, or ocean and goes into the air.
EvaporationPart one of the water cycle
People sweat and plants transpire. Transpiration is the process by which plants lose water out of their leaves. Transpiration gives evaporation a bit of a hand in getting the water vapor back up into the air.
» Do plants sweat?
• Water vapor in the air gets cold and changes back into liquid, forming
clouds.
Evaporation
CondensationPart 2 of the Water Cycle
Rain or Snow???
Rain occurs when tiny cloud droplets collide to form bigger droplets. This keeps happening until the droplet is too heavy for the air to support it. The droplet then begins to fall, colliding with more cloud droplets as it gains in size. If the liquid water does not encounter a deep layer of sub-freezing air, it will remain liquid and fall to the ground as rain.
Snow occurs when the layer of the atmosphere from the surface of the earth through the cloud is entirely below freezing. The precipitation falls from the cloud as snow and does not melt at all while falling to the ground.
Precipitation
Evaporation
Condensation
Part 1 of the Water Cycle
Part 3 of the Water Cycle
Part 2 of the Water Cycle
The return of water tothe surface in the form ofrain, snow, sleet, hail, etc.= ____________________
The evaporation of water from the surface of plant leaves = ________________
Bacteria that live ______________and in symbiotic relationships withplants called legumes take nitrogen from the atmosphere and turn it into ______________, a form that is usable by plants.
THIS PROCESSIS CALLED_________________
in the soil
AMMONIA (NH3)
NITROGEN FIXATION
Image from: http://www.utdallas.edu/images/departments/biology/misc/gonzalez-image.jpg and http://www.cibike.org/CartoonEating.gif modified by Riedell
Other bacteria in the soil convertammonia into ________________& _________________which plants can also use. The nitrogen we need for proteins, ATP, and nucleic acids comes from
the ___________ ___________ we breathe!
NITRATES (NO3- )
FOOD WE EATNOT THE AIR
NITRITES (NO2-)
Bacteria that live ______________also carry out the reverse process