University of Missouri
University of Missouri: The Nitrogen Cycle
This resource provides an explanation, accompanied by diagrams, of the nitrogen cycle, and also about how it can impact on water quality.
CK-12 Foundation
Ck 12: Episd: Nitrogen Cycle
[Free Registration/Login may be required to access all resource tools.] Students will be introduced to the nitrogen cycle.
CK-12 Foundation
Ck 12: Earth Science: Nitrogen Cycle in Ecosystems
[Free Registration/Login may be required to access all resource tools.] Describes the nitrogen cycle.
CK-12 Foundation
Ck 12: Earth Science: Nitrogen Cycle in Ecosystems
[Free Registration/Login may be required to access all resource tools.] Describes the nitrogen cycle.
CK-12 Foundation
Ck 12: Life Science: Nitrogen Cycle
[Free Registration/Login may be required to access all resource tools.] Like water and carbon, nitrogen is also repeatedly recycled through the biosphere. This process is called the nitrogen cycle. Learn more about the nitrogen cycle in...
CK-12 Foundation
Ck 12: Biology: Nitrogen Cycle
[Free Registration/Login may be required to access all resource tools.] Covers the nitrogen cycle.
Scholastic
Scholastic: Study Jams! Science: Ecosystems: The Nitrogen Cycle
A video and a short multiple-choice quiz on the nitrogen cycle and how it works in an ecosystem.
National Earth Science Teachers Association
Windows to the Universe: The Nitrogen Cycle
Interesting information on the Nitrogen Cycle as it relates to the Earth system.
Khan Academy
Khan Academy: Biogeochemical Cycles
Test your knowledge of the water cycle, carbon cycle, and nitrogen cycle.
University Corporation for Atmospheric Research
Ucar: Cycles of the Earth System: Traveling Nitrogen
Through hands-on activities, learners play the role of nitrogen atoms traveling through the nitrogen cycle to gain understanding of the varied pathways through the cycle and the relevance of nitrogen to living things.
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.
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...
Bio Topics
Bio Topics: Cycles in the Ecosystem
A activity 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.
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....
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