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.
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: Life Science: 12.23 Nitrogen Cycle
Learn about the Nitrogen cycle, and understand how it affects the ecosystem.
University of Illinois
University of Illinois: Illinois State Water Survey: Simplified Nitrogen Cycle
A semi-technical description of the nitrogen cycle. Contains a link to an abridged version of the page along with a list of further resources on the topic.
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.
BiologyWise
Biology Wise: Nitrogen Cycle Steps
Nitrogen is essential to all living things. This article explains what the nitrogen cycle is and the five steps involved in it.
CK-12 Foundation
Ck 12: Earth Science: Nitrogen Cycle in Ecosystems Study Guide
Review the main concepts of the nitrogen cycle in this study guide.
CK-12 Foundation
Ck 12: Biology: Nitrogen Cycle
[Free Registration/Login may be required to access all resource tools.] Covers the nitrogen cycle.
American Geosciences Institute
American Geosciences Institute: Earth Science Week: Traveling Nitrogen
Students play the role of nitrogen atoms traveling through the nitrogen cycle to gain understanding of the varied pathways through the cycle and how nitrogen is relevant to living things.
Other
Physical Geography: Nitrogen Cycle
Learn that the nitrogen cycle illustrates how nutrients cycle through a terrestrial ecosystem with the chapter in this free textbook. Explains how nitrogen plays an important role for life. See a diagram of the nitrogen cycle that shows...
Utah Education Network
Uen: Nitrogen Cycle Stream Side Science
Students will learn about the nitrogen cycle through discussion and the construction of a diagram.
University Corporation for Atmospheric Research
Ucar: The Carbon Cycle
A comprehensive introduction to the carbon cycle. The cycle of atoms between living and non-living things is known as a biogeochemical cycle. The most common of these are the carbon and nitrogen cycles.
Mocomi & Anibrain Digital Technologies
Mocomi: The Nitrogen Cycle
A slideshow illustrates what nitrogen is and how it helps our environment.
BiologyWise
Biology Wise: Understanding Nitrogen Cycle With a Diagram
Describes the steps involved in the nitrogen cycle, a critical biogeochemical cycle.
Science Buddies
Science Buddies: Nitrogen Fixing Bacteria and Nitrogen Fertilizers
Plants need nitrogen to build proteins and nucleic acids to grow healthy stems and leaves. Though the Earth's atmosphere is made up of 79% nitrogen, the form of nitrogen found in the atmosphere cannot be used by plants. In this...
Encyclopedia of Earth
Encyclopedia of Earth: Nitrogen
Information about the element, Nitrogen, atomic number 14. Covers common chemical transformations, its physical properties, atomic properties, how abundant it is on the Earth, and details about health-related regulations. Also discusses...
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'...
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.
Texas Education Agency
Texas Gateway: Abiotic Cycles
Given scenarios, illustrations, or descriptions, the student will describe the flow of matter through carbon and nitrogen cycles and describe the consequences of disrupting these cycles.
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...
Ducksters
Ducksters: Science for Kids: Nitrogen Cycle
Kids learn about the nitrogen cycle and how this nutrient travels through the ecosystem to sustain life on Earth.
University Corporation for Atmospheric Research
Ucar: Biogeochemical Cycles
The ways in which an element or compound such as water moves between its various living and nonliving forms and locations in the biosphere is called a biogeochemical cycle. All of the atoms that are building blocks of living things are a...