Name: _______________ Date: ___________________ Period: _____________________
BIO –
GEO –
CHEMICAL Biogeochemical Cycles:
ENERGY ______________ but
NUTRIENTS _______________
The WATER CYCLE
To answer the following questions, first go to:
http://player.discoveryeducation.com/views/hhView.cfm?guidAssetId=087777c8-4ff0-45d2-878fe7cd90f7ee19 then go to: http://www.pbslearningmedia.org/asset/ess05_int_hydrocycle/
1) Label the parts of the water cycle above.
Name: _______________ Date: ___________________ Period: _____________________
2) Define the following:
Condensation:
Precipitation:
Infiltration (also called Percolation):
Groundwater:
Runoff:
Evapotranspiration:
Carbon Cycle
Name: _______________ Date: ___________________ Period: _____________________
1. Go to the following site: http://ngm.nationalgeographic.com/big-idea/05/carbon-bath
and look at the “carbon bathtub” model.
-
What is the main source of carbon entering the “tub”?
-
What is the main exit or “drain” from the tub?
-
If our atmosphere is that tub, what’s the problem with the current situation and how
should it be fixed?
Review video:
http://www.bbc.co.uk/schools/gcsebitesize/science/aqa/energy_biomass/thecarboncycleact.shtml
Review game: http://www.windows2universe.org/earth/climate/carbon_cycle.html
Use the above images to answer the next few questions:
3. Where is the largest and second largest quantity of carbon found?
4. List the various ways carbon can be released into the atmosphere.
Name: _______________ Date: ___________________ Period: _____________________
5. Write out the following equations in both words and in chemical symbols:
Photosynthesis
Cellular Respiration
6. How do the processes of photosynthesis and cellular respiration complement each
other?
7. Explain the difference between rapid cycling and slow cycling of carbon. Slow C cycle
(http://earthobservatory.nasa.gov/Features/CarbonCycle/page2.php); fast C cycle
(http://earthobservatory.nasa.gov/Features/CarbonCycle/page3.php).
Name: _______________ Date: ___________________ Period: _____________________
The NITROGEN CYCLE
To answer the following questions, go to: http://www.pbslearningmedia.org/asset/lsps07_int_nitrogen/
1) Label all of the steps in the nitrogen cycle above.
2) Why do organisms need nitrogen?
3) Name three types of bacteria involved in the nitrogen cycle:
4) How are animal wastes and dead organisms converted to other nitrogen-containing compounds?
5) Name two ways that humans are interfering with the Nitrogen cycle:
Name: _______________ Date: ___________________ Period: _____________________
6) Fill in the blanks:
 Nitrogen Fixation occurs when b__________ convert N2 (N______ G_____) into
org_______ materials.
 Ammonification occurs when a __ o __ i __ fying bacteria or f__ng__ convert N2
into a_________ ions (NH4+). These ions then bind with s______ particles.
 Ammonification also takes place when de__ o__ p__ sers break down animal waste or
d______ organisms.
 Nitrification occurs in ___ steps. Ni__ r __ f __ ing bacteria can help release the
a______________ ions from the soil by converting these ions into Nitr __te ions
(NO__) and then Nitr__te ions (NO__).
 Plants can absorb either nitr__te ions (NO__) or a________________ ions (NH__). All
the ni_____________ in animals comes from p_________.
 Denitrification: occurs when d__n__ t__ i __ ying b__________ convert nitr__tes
(NO__) into N2 (N______ G_____) .
The PHOSPHOROUS CYCLE
To answer the following questions, go to:
https://www.lcmrschooldistrict.com/roth/PowerPoint_Lectures/chapter46/videos_animations/pho
s_anim.html
1) Label the parts of the phosphorous cycle above.
2) What are the 2 main reservoirs for phosphorous?
3) Describe how plants, animals, and decomposers access phosphorous:
Name: _______________ Date: ___________________ Period: _____________________
4) Phosphorous circulates through w_______ , the e________’s c_______ , and
l__________ o_____________.
5) There is no at_____________ component of the phosphorous cycle.
6) Name 2 ways that humans are interfering with the phosphorous cycle:
To answer the following questions, go to:
http://www.sumanasinc.com/webcontent/animations/content/phosphorouscycle.html
7) Why is phosphorous important for living things?
8) How can excess phosphorous distrupt a marine ecosystem?