National Earth Science Teachers Association
Windows to the Universe: Biogeochemical Cycles
Biogeochemical cycles happen when individual elements are recycled over and over in different parts of the Earth. Two examples are the Nitrogen Cycle and Carbon Cycle. Read an explanation of biogeochemical cycles and view a diagram of...
Michigan Reach Out
University of Michigan: Liquid Nitrogen Fun!
Lessons and science demos using liquid nitrogen.
Mocomi & Anibrain Digital Technologies
Mocomi: The Nitrogen Cycle
A slideshow illustrates what nitrogen is and how it helps our environment.
CK-12 Foundation
Ck 12: Life Science: Water Cycle
[Free Registration/Login may be required to access all resource tools.] Water and elements like carbon and nitrogen are constantly being recycled through the environment. This process is called a biogeochemical cycle because it involves...
Other
The Learning Partnership: Journey to El Yunque
In this set of learning modules, students examine the impact of hurricane weather on the El Yunque rainforest in Puerto Rico. They learn about hurricanes, producers, consumers, and the food chain, and how disruptions in organisms'...
BiologyWise
Biology Wise: Information About Nitrifying and Denitrifying Bacteria
Learn about the important role that nitrifying and denitrifying bacteria play in the nitrogen cycle.
University Corporation for Atmospheric Research
Ucar: Nitrogen
Facts about the chemical element, nitrogen found in the Earth's atmosphere.
Science Struck
Science Struck: Nitrogen in the Atmosphere
Learn about the properties of nitrogen, how it was first formed, where it is found, and the importance of the nitrogen cycle.
Bio Topics
Bio Topics: Cycles in the Ecosystem
A worksheet and notes covering cycles in the ecosystem, including the carbon and the nitrogen cycles.
Georgia Department of Education
Ga Virtual Learning: Matter and Energy Cycles
In this incredibly comprehensive interactive tutorial you will learn about the carbon cycle. You will also learn about how matter and energy flows through the nitrogen cycle and phosphorus cycle.
Khan Academy
Khan Academy: Biogeochemical Cycles Review
Review information on the cycling of matter throughout the spheres of Earth.
Chemicool
Chemicool: Nitrogen
This site from Chemicool provides a set of data tables summarizing basic chemical and physical properties of nitrogen.
University Corporation for Atmospheric Research
Ucar: Climate Discovery Teacher's Guide: Investigating Climate Present
Lesson plans on the following: Carbon cycle: Carbon Dioxide Sources and Sinks, Nitrogen Cycle: Traveling Nitrogen, Ocean and Atmosphere: Make Convection Currents, Energy Cycle: Albedo
Sophia Learning
Sophia: Plant Kingdom: Photosynthesis
An introduction to the nitrogen cycle as it relates to plant photosynthesis. Find out how plants obtain the nitrogen they need for life.
Khan Academy
Khan Academy: Prokaryote Interactions & Ecology
Learn about cooperation and "multicellularity" in prokaryotes including mutualisms, commensalisms, parasitisms. Also find out the role of prokaryotes in the carbon and nitrogen cycles.
Other
S Cool: Engery Flow and Nutrient Cycle
This website describes trophic levels, transfer of energy between trophic levels, pyramids of ecology, and nutrient cycles within the environment.
Thinkport Education
Thinkport: Write Now: Write Now How Can Nitrogen Affect My Business?
Students are asked to conduct online research in order to write an informative article about the development of algae blooms in Maryland's Deep Creek Lake.
Massachusetts Institute of Technology
Mit: Open Course Ware: Courses: Civil Environmental: Ecology I: The Earth System
College-level online course highlighting the fundamentals of ecology. Course topics include coevolution of the biosphere, geosphere, atmosphere, and hydrosphere; photosynthesis and respiration; and the carbon, nitrogen, and water cycles....
ClassFlow
Class Flow: Nitrogen
[Free Registration/Login Required] In this flipchart, students are introduced to the element nitrogen, its gaseous state, atomic structure, and how it combines with hydrogen to form ammonia.
CK-12 Foundation
Ck 12: Biology: Recycling Matter Study Guide
Review some of the cycles that recycle matter through Earth's biospheres.