Highlights of this course include: Major biological, chemical and physical components of the agricultural systems The scientific basis for understanding these systems and their management How has science influenced policies related to agriculture, food safety and environment in the United States? How have the policies evolved over time in the US? What has worked and what has not; what are the reasons and what are the consequences? Beyond science, what other factors influence policies? How do we link what we learn to ecological agriculture? How do we use what we learn for policy analysis?

This is the second of four curriculum guides focusing on astrobiology and careers for grades 5-8. Students are confronted with the challenge of searching for and designing a planet that would be habitable to humans. Using an online, multimedia module, students change the amounts of gases in our atmosphere and draw conclusions about which factors are necessary for human survival. Students then engage in classroom activities that help them to form an understanding of atoms, elements, and molecules as the components of gases that have unique properties that makes each gas important to human survival. They further explore the process of chemical change, with a focus on some of the chemical reactions most important to human survival. In contrast, they learn how the inert gas, nitrogen, is important to human life by contributing to our surface pressure. Finally, they connect their learning to the systems they explored in Astronomy.

This site features Java Applet, QuickTime, and Flash animations that illustrate characteristics and functions of the atmosphere. They show how atmospheric temperature, pressure, and density change with respect to changing altitude, the way different kinds of radiation (x-ray, ultraviolet, visible, and infrared) act in various levels of the atmosphere (troposphere, stratosphere, mesosphere, and thermosphere/ionosphere), how oxygen gas and chlorofluorocarbons (CFCs) interact with ultraviolet radiation to create and deplete ozone, and the manner in which radiation is trapped in the atmosphere, causing the greenhouse effect and global warming. The animations can be paused and rewound to stress important points. These resources are suitable for use in lectures, labs, or other teaching activities.

"This undergraduate class is designed to introduce students to the physics that govern the circulation of the ocean and atmosphere. The focus of the course is on the processes that control the climate of the planet.AcknowledgmentsProf. Ferrari wishes to acknowledge that this course was originally designed and taught by Prof. John Marshall."

This site includes simulations of more than 40 phenomena: sea ice and CO2, climate change (230-year period), clouds and precipitation, coral reef evolution (starting 21,000 years ago), universal fire shape, fire twirl and burst behavior, tornadoes, thunderstorms, typhoons, El Niño events, greenhouse gases and sulfate aerosols, polar vortex breakdown, CO2 and temperature, CFCs in the ocean, cloud evolution (7-day period), daily weather in the U.S., and more.

Students learn about using renewable energy from the Sun for heating and cooking as they build and compare the performance of four solar cooker designs. They explore the concepts of insulation, reflection, absorption, conduction and convection.

Students investigate how melting ice can affect sea level rise. Students will practice the steps involved in a scientific investigation as they learn why ice formations on land -- not those on water -- will cause a rise in sea level upon melting. Activity can be a teacher led demonstration or student laboratory. Grades 3-8. This resource is part of the Our Changing Ocean and Estuaries Series.

Since 1880, the levels of carbon dioxide in the atmosphere and global temperatures have been following a parallel rising path. Is this simply a coincidence? Most scientists don't think so. This video excerpt from Race to Save the Planet describes the relationship between human activities and negative changes to our global climate.

How do greenhouse gases affect the climate? Explore the atmosphere during the ice age and today. What happens when you add clouds? Change the greenhouse gas concentration and see how the temperature changes. Then compare to the effect of glass panes. Zoom in and see how light interacts with molecules. Do all atmospheric gases contribute to the greenhouse effect?

Students explore heat transfer and energy efficiency using the context of energy efficient houses. They gain a solid understanding of the three types of heat transfer: radiation, convection and conduction, which are explained in detail and related to the real world. They learn about the many ways solar energy is used as a renewable energy source to reduce the emission of greenhouse gasses and operating costs. Students also explore ways in which a device can capitalize on the methods of heat transfer to produce a beneficial result. They are given the tools to calculate the heat transferred between a system and its surroundings.

Students learn about the advantages and disadvantages of the greenhouse effect. They construct their own miniature greenhouses and explore how their designs take advantage of heat transfer processes to create controlled environments. They record and graph measurements, comparing the greenhouse indoor and outdoor temperatures over time. Students are also introduced to global issues such as greenhouse gas emissions and their relationship to global warming.

Do you ever wonder how a greenhouse gas affects the climate, or why the ozone layer is important? Use the sim to explore how light interacts with molecules in our atmosphere.

The laws of classical mechanics and thermodynamics are used to explore how the properties of fluids on a rotating Earth manifest themselves in, and help shape, the global patterns of atmospheric winds, ocean currents, and the climate of the Earth. Theoretical discussion focuses on the physical processes involved. Underlying mechanisms are illustrated through laboratory demonstrations, using a rotating table, and through analysis of atmospheric and oceanic data.