Earth Motion 3: Our Changing Earth   Western Reserve Public Media
Module 1: Earth Cycles

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Earth Cycles Overview

In this module, students do hands-on activities related to the water, oxygen, carbon and nitrogen cycles. The module begins with a formative assessment. Each section includes a resource page and PowerPoints that explain the basic concepts involved. The main goal of the module is to understand how the cycles operate and to be aware that our actions have an effect on the life of the cycles and ultimately on the earth.

In the water cycle section, students place the different parts of the cycle on a model. They also do an experiment to show the effects of acid rain on the earth.

In the oxygen cycle, students see a demonstration of the cycle and then do an experiment to see the effect of oxygen deprivation.

In the carbon cycle, students collect data and create a graph about the comparison of carbon in the air and temperature increase.

In the nitrogen cycle, students play a game that requires them to go to stations around the room and get information about nitrogen.

Finally, a project involves students creating a board game using information they learned from the activities above. They can then play their game with others in the class.

A summative assessment is included.


Standards Addressed

Grade 7, Science, Earth Science

6-8 Benchmark C. Describe interactions of matter and energy throughout the lithosphere, hydrosphere and atmosphere (e.g., water cycle, weather and pollution).

Y2003.CSC.S01.G06-08.BC.L07.I01 / Earth Systems

01. Explain the biogeochemical cycles which move materials between the lithosphere (land), hydrosphere (water) and atmosphere (air).


Y2003.CSC.S01.G06-08.BC.L07.I02 / Earth Systems

02. Explain that Earth’s capacity to absorb and recycle materials naturally (e.g., smoke, smog and sewage) can change the environmental quality depending on the length of time involved (e.g. global warming).


Y2003.CSC.S01.G06-08.BC.L07.I03 / Earth Systems

03. Describe the water cycle and explain the transfer of energy between the atmosphere and hydrosphere.


Y2003.CSC.S01.G06-08.BC.L07.I04 / Earth Systems

04. Analyze data on the availability of fresh water that is essential for life and for most industrial and agricultural processes. Describe how rivers, lakes and groundwater can be depleted or polluted becoming less hospitable to life and even becoming unavailable or unsuitable for life.

Scatter Plots (PDF file) Formative Assessment (PDF file) Formative Assessment — Answers (PDF file) Types of Cars (PDF file) Sample Graphs (PDF file) Road Rally (PDF file) Summative Assessment (PDF file) Summative Assessment — Answers (PDF file) Chapter Synopsis Graphing Data Road Rally Graphing Graphing Vocabulary Copyright©2010, Northeastern Educational Television of Ohio, Inc. All rights reserved.
Earth Cycles Overview Earth Cycles Vocabulary Earth Cycles Formative Assessment Water Cycle Oxygen Cycle Carbon Cycle Nitrogen Cycle Cycles Project Earth Cycles Summative Assessment (PDF File) Overview Module 1: Earth Cycles Module 2: Our Changing Earth Module 3: Transfer of Energy Teacher Materials Online Resources Watch Online