General Cycle Questions

General Cycle QuestionsDirections: Answer each of the following questions by either fillingin the blank or answering the short answer questions withCOMPLETE SENTENCES.1.A cycle shows the AMOUNT of certainelements and compounds (e.g. water, carbon, oxygen,nitrogen, phosphorus) in different forms in ecosystems.2.Cycling maintains homeostasis ( BALANCE ) in theenvironment.3.The SUN provides the heat energy required for the watercycle to continue.4.CARBON and OXYGEN occurs in all livingorganisms in the forms of CO2, carbohydrates (sugars andstarches), proteins and fats/lipids.5.Molecules are passed around again and again within thebiosphere in NUTRIENT cycles.6.Water, CARBON , and Nitrogen also cycle between theatmosphere, environment, and organisms.PHOSPHORUS does not cycle through the atmosphere.7.Ecologists discovered that trout were dying in a stream thatran through some farmland where nitrogen fertilizer was usedon the crops. How might you explain what happened?Formulate a hypothesis in order to test your idea. RUNOFFFROM FERTILIZERS INCREASED PLANT GROWTHIN WATER (ALGAL BLOOMS), WHICH SUFFICATEDTHE AQUATIC ENVIRONMENT.Name:Period:

Directions: Answer each of the following questions by either fillingin the blank or answering the short answer questions withCOMPLETE SENTENCES.Directions: Match each arrow with its description. Then color the arrow and thebox next to the description the same color.1.Water molecules enter the atmosphere when theyEVAPORATE from bodies of water.2.Water in the atmosphere cools and CONDENSES .3.When droplets become large enough they fall to the earth asPRECIPITATION .4.Much of the water on land runs into STREAMS andRIVERS, PONDS, ETC.5.Water on land surfaces ultimately enters theOCEAN .6.The process by which water changes from liquid form to anatmospheric gas is called EVAPORATION.7.During TRANSPIRATION , water enters theatmosphere by evaporating from the leaves of plants.8.Give examples of precipitation in the following forms: solid,liquid and gas. HAIL – SOILD, RAIN LIQUID, FOG GAS9.Why is water so important to life? ESSENTIAL FOR LIFE– NEED WATER TO HYDRATE.10.Explain as best you can what the following quote means:“We all live upstream”. EVERYTHING WE DOEFFECTS OTHERS – IF OUR WATER IS POLLUTED,THEN IT WILL DAMAGE ECOSYSTEM FURTHERDOWNSTREAME Run off from the SurfaceB Precipitation over the OceanF Evaporation of the OceanD Seepage from GroundC TranspirationFold hereA Precipitation over Land

Directions: Answer each of the following questions by either fillingin the blank or answering the short answer questions withCOMPLETE SENTENCES.1.Human activities such as BURNING FOSSIL FUELS,RESPIRATION cycle carbon through the carbon cycle.2.Biological processes such as RESPIRATION &PHOTOSYNTHESIS cycle carbon through the carboncycle.3.Geochemical processes such as VOLCANOES,CONVERSION TO FOSSIL FUELS release carbon intothe atmosphere.4.Through BIOLOGICAL RESPIRATION carbon dioxide isreturned back to the atmosphere.5.Plant use CARBON to build organic molecules duringPHOTOSYNTHESIS6.What are the main sources of carbon dioxide in theatmosphere? RESPIRATION OF ANIMALS, BURNINGOF FOSSIL FUELS7.Every ORGANISM on Earth needs carbon either forstructure, energy, or, as in the case of humans, for both.8.Carbon is found in forms as diverse as the gas carbon dioxide(CO2), and in solids like LIMESTONE (CaCO3), wood,plastic, diamonds, plants, and graphite.9.What are the sources of carbon in the ocean?SHELLS,LIMESTONE, AQUATIC ORGANISMS10.Describe the role of producers in the carbon cycle.TAKECARBON OUT OF ATMOSPHERE (photosynthesis)Directions: Match each arrow with its description. Then color the arrow and the boxnext to the description the same color.M Uses for Fossil FuelsB PhotosynthesisA AtmosphereO Forest FireI Detritus FeedersD Respiration in PlantsJ Detritus Feeder RespirationN Products of CombustionK Conversion to Fossil FuelsF Animal ConsumptionL Fossil Fuel ProcessingP Exchange with OceansG Animal RespirationE Plant ConsumptionC ForestFold hereH Decay

Directions: Answer each of the following questions by either fillingin the blank or answering the short answer questions withCOMPLETE SENTENCES.Directions: Match each arrow with its description. Then color the arrow and the boxnext to the description the same color.E AmmonificationB Nitrogen FixationA AtmosphereJ Consumption by AnimalsH NitrobacterC Legume PlantG NitrosomonasI Consumption by PlantsF NitrificationD Nitrogen-fixing BacteriaA chemical substance that an organisms requires to live iscalled a NUTRIENT .2.The conversion of atmospheric nitrogen into a form used byplants is a process called NITROGEN FIXATION.3.The conversion of nitrogen from the soil into nitrogen gas iscalled DENTRIFICATION .4.In the nitrogen cycle, the bacteria that live on the roots ofplants change ATMOSPHERIC N (N2) intoAMMONIUM (NH4 )5.The atmosphere is 78-80 % nitrogen gas.6.Nitrogen fixing BACTERIA live in the SOIL orwithin THE ROOTS of plants.7.Organisms must have Nitrogen to make PROTEINS andAMINO ACIDS .8.What is the importance of nitrogen fixation in an ecosystem?CHANGES ATMOSPHEREIC NITROGEN (N2) INTO AFORM WE CAN USE AMMONIUM (NH4 )9.Fold hereK Denitrification1.How are bacteria important in the nitrogen cycle?THEY DOTHE CONVERTING INTO A USABLE FORM &BREAK DOWN DEAD ORGANISMS RELEASING NTO BE USED AGAIN.

Directions: Answer each of the following questions by either fillingin the blank or answering the short answer questions withCOMPLETE SENTENCES.1.Most of the phosphorus in the biosphere is stored in theBONES AND TEETH OF ORGANISMS OR PLANTS,ROCKS & SOIL IN GEOSPHERE2.Phosphate INCREASES the growth of planktonand plants.3.How does organic phosphate move through a foodweb?FROM ORGANISM TO ENVIRONMENT AND BACKAGAIN.BREAKS OFF OF ROCKS (WEATHERING),PLANTS ABSORB IT & DECOMPOSERS PUT IT BACKINTO THE SOIL, THEN PLANTS USE IT (ABSORBTHROUGH ROOTS) AND ANIMALS EAT PLANTS.4.What is one way that the phosphorus cycle differs from thecarbon and nitrogen cycles? DOES NOT CYCLE UP INTOTHE ATMOSPHERE5.How is phosphorus important to living organisms? BONESIN TEETH IN ANIMALS, INCREASES PLANT GROWTHDirections: Match each arrow with its description. Then color the arrow and the boxnext to the description the same color.E GrazingH Runoff to OceanB Absorption by PlantsG Animal WastesDA Erosion from RockPlant ConsumptionI Marine SedimentJ Geologic Up thrustC Concentration in Plant TissueHow do humans affect the nitrogen and phosphorus cycles?USE FERTILIZERS ON CROPS, WHICH RUN OFF INTOTHE RIVERS & PRODUCES ALGAL BLOOMS, WHICHTHEN SUFFICATE THE AQUATIC ENVIRONMENT.Fold hereF Plant Waste6.

Water, CARBON_, and Nitrogen also cycle between the atmosphere, environment, and organisms. PHOSPHORUS does not cycle through the atmosphere. 7. Ecologists discovered that trout were dying in a stream that ran through some farmland where nitrogen fertilizer was used on the crops. How might you explain what happened?