click below
click below
Normal Size Small Size show me how
Sci8/CyclesinNature
First 9 Weeks Review
Term | Definition |
---|---|
Water Cycle | model to describe how water moves from the Earth's surface to atmosphere and back to the surface again through evaporation, condensation, and precipitation. |
Evaporation | water changes from a liquid to a gas |
Condensation | gas changes back to a liquid |
Precipitation | droplets that fall from from the clouds to ground as rain, snow, and sleet, etc. |
Nitrogen Cycle | Model describing how Nitrogen moves from the atmosphere to the soil, to living organism, then back to the atmosphere. The nitrogen cannot be used in the free form as a gas. |
plants | Bacteria in the soil is fixed so that some _______ can use the Nitrogen. Animals eat the _________ and get Nitrogen. |
soil | Waste from animals returns Nitrogen to the ________. When animals and plants die decomposers return the Nitrogen to the ______ for plants. |
Nitrogen | _____________ is changed into usable compounds from lighting. Plants and animals use _________ to build cells. Human DNA contains _________. |
Carbon Cycle | Model describing how Carbon molecules move between the living and nonliving world. |
photosynthesis | The carbon cycle begins when (plants) remove Carbon Dioxide during photosynthesis and give off oxygen as a product. |
respiration | During ____________ animals take in Oxygen and give off Carbon Dioxide. |