Keywords: Water (453)

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A Day in the Life of a Drop
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A Day in the Life of a Drop

A Day in the Life of a Drop is a set of ... (more)

A Day in the Life of a Drop is a set of activities designed to help students in grades 3-5 understand the connections between the source of the water they use and the ways their water use habits affect the environment and human health. Students also learn how to reduce their impacts and engage family members. After completing the worksheets provided, students and families take the Pledge to Filter Out Bad Water Habits to demonstrate their commitment to saving water for the future. (less)

Subject:
Science and Technology
Material Type:
Activities and Labs
Provider:
Environmental Protection Agency
Provider Set:
U.S. Environmental Protection Agency
Dead Zone
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Dead Zone

Hypoxic zones are areas in the ocean of such low oxygen concentration ... (more)

Hypoxic zones are areas in the ocean of such low oxygen concentration that animal life suffocates and dies, and as a result are sometimes called "dead zones." One of the largest dead zones forms in the Gulf of Mexico every spring. This data visualization discusses the causes of hypoxia in the Gulf of Mexico. (less)

Subject:
Science and Technology
Material Type:
Simulations
Provider:
NOAA
Provider Set:
NOAA
Author:
NOAA
The Dead Zone: Ecology and Oceanography in the Gulf of Mexico
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The Dead Zone: Ecology and Oceanography in the Gulf of Mexico

This interrupted case study focuses on the seasonal hypoxic area in the ... (more)

This interrupted case study focuses on the seasonal hypoxic area in the Gulf of Mexico known as the Dead Zone. It follows Sue, a college student, whose father is a commercial fisherman affected by the lack of fish in his usual fishing grounds in the summer. In her quest to determine why the fish disappear, Sue learns about both the biological and physical forces that produce, maintain, and eventually dissipate the hypoxic zone. The case introduces students to the marine food web, the aquatic microbial loop, the impact of exogenous nutrients, and the physical forces that affect oxygen content and water stratification. It could be used in introductory biology or ecology courses or in an oceanography course. (less)

Subject:
Ecology
Forestry and Agriculture
Geoscience
Life Science
Social Sciences
Education
Material Type:
Case Study
Instructional Material
Provider:
National Center for Case Study Teaching in Science
Provider Set:
Case Study Collection
Author:
Kathleen Archer
Lauren Sahl
Decomposers
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Decomposers

Decomposers eat and break down dead organic material and release nutrients into ... (more)

Decomposers eat and break down dead organic material and release nutrients into the soil. Decomposers help in nutrient cycling because they release atoms, which are then recycled in the environment (soil, air, water). Decomposers range from obvious earthworms to non-obvious microscopic microbes and bacteria. (less)

Subject:
Science and Technology
Life Science
Material Type:
Images and Illustrations
Provider:
BiosciEdNet (BEN): Digital Library Portal for Teaching and Learning in the Biological Sciences
California State University, Fullerton
Provider Set:
BiosciEdNet (BEN): Digital Library Portal for Teaching and Learning in the Biological Sciences
Video and Image Data Access
Author:
Katie Hale (CSUF;Biological Sciences)
Decomposition in Freshwater
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Decomposition in Freshwater

This lesson includes hands-on activities to demonstrate the process of decomposition in ... (more)

This lesson includes hands-on activities to demonstrate the process of decomposition in a freshwater ecosystem. It also focuses on the importance of decomposition and its critical role in the food chain. (less)

Subject:
Science and Technology
Material Type:
Lesson Plans
Provider:
University of North Carolina at Chapel Hill School of Education
Provider Set:
LEARN NC Lesson Plans
Author:
Heather Lanier
Defining Drought
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Defining Drought

Drought affects humans, animals, and plants. Humans can change the course of ... (more)

Drought affects humans, animals, and plants. Humans can change the course of the water cycle, to some extent, to meet their needs, but can they do so without imposing risks on the plants and animals? As urban areas continue to grow, policy makers must plan for potential water shortages, taking into account competing interests for water.In this lesson, students will look at drought from a variety of perspectives. The lesson focuses first on the scientific definition of drought, including weather patterns, water cycles, water requirements by plants and animals, and physiological responses by plants and animals to drought. The lesson also focuses on the current and historic social and economic impacts of drought. (less)

Subject:
Science and Technology
Ecology
Forestry and Agriculture
Geoscience
Social Sciences
Education
Material Type:
Instructional Material
Lesson Plans
Teaching and Learning Strategies
Provider:
AAAS
BiosciEdNet (BEN): Digital Library Portal for Teaching and Learning in the Biological Sciences
Provider Set:
Science Netlinks
BiosciEdNet (BEN): Digital Library Portal for Teaching and Learning in the Biological Sciences
Author:
American Association for the Advancement of Science (;)
Desalination and Water Purification, Spring 2009
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Desalination and Water Purification, Spring 2009

" Water supply is a problem of worldwide concern: more than 1 ... (more)

" Water supply is a problem of worldwide concern: more than 1 billion people do not have reliable access to clean drinking water. Water is a particular problem for the developing world, but scarcity also impacts industrial societies. Water purification and desalination technology can be used to convert brackish ground water or seawater into drinking water. The challenge is to do so sustainably, with minimum cost and energy consumption, and with appropriately accessible technologies. This subject will survey the state-of-the-art in water purification by desalination and filtration. Fundamental thermodynamic and transport processes which govern the creation of fresh water from seawater and brackish ground water will be developed. The technologies of existing desalination systems will be discussed, and factors which limit the performance or the affordability of these systems will be highlighted. Energy efficiency will be a focus. Nanofiltration and emerging technologies for desalination will be considered. A student project in desalination will involve designing a well-water purification system for a village in Haiti." (less)

Subject:
Science and Technology
Material Type:
Activities and Labs
Full Course
Homework and Assignments
Lecture Notes
Provider:
M.I.T.
Provider Set:
MIT OpenCourseWare
Author:
Balaban, Miriam
Lienhard, John
Desert Features
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Desert Features

Sand covers only about 20 percent of the Earth's deserts. Nearly 50 ... (more)

Sand covers only about 20 percent of the Earth's deserts. Nearly 50 percent of desert surfaces are gravel plains where removal of fine-grained material by the wind has exposed loose gravel and occasional cobbles. This web page, produced by the U.S. Geological Survey, features text and photographs that describe desert landforms, soils, plants, and the role of water in the formation of desert landscapes. (less)

Subject:
Science and Technology
Chemistry
Ecology
Forestry and Agriculture
Geoscience
Physics
Space Science
Material Type:
Images and Illustrations
Readings
Reference
Provider:
UCAR Staff
Provider Set:
NASA Earth and Space Science Education Collection
Author:
Kathie Watson
Design for Sustainability, Fall 2004
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Design for Sustainability, Fall 2004

This course on sustainability will cover the implications of this topic on ... (more)

This course on sustainability will cover the implications of this topic on engineering, design, and architecture. The course will begin with a general survey and discussion of current trends, followed by the introduction of the life cycle assessment (LCA) method as a rigorous, quantitative alternative to current popular sustainability measures for the built environment. (less)

Subject:
Science and Technology
Material Type:
Full Course
Homework and Assignments
Lecture Notes
Syllabi
Provider:
M.I.T.
Provider Set:
MIT OpenCourseWare
Author:
Connor, Jerome
Ochsendorf, John Allen
Design for Sustainability, Fall 2006
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Design for Sustainability, Fall 2006

The course considers the growing popularity of sustainability and its implications for ... (more)

The course considers the growing popularity of sustainability and its implications for the practice of engineering, particularly for the built environment. Two particular methodologies are featured: life cycle assessment (LCA) and Leadership in Energy and Environmental Design (LEED). The fundamentals of each approach will be presented. Specific topics covered include water and wastewater management, energy use, material selection, and construction. (less)

Subject:
Science and Technology
Material Type:
Activities and Labs
Full Course
Homework and Assignments
Lecture Notes
Syllabi
Provider:
M.I.T.
Provider Set:
MIT OpenCourseWare
Author:
Adams, Eric
The Dirty Water Project
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The Dirty Water Project

In this activity, students investigate different methods (aeration and filtering) for removing ... (more)

In this activity, students investigate different methods (aeration and filtering) for removing pollutants from water. They will design and build their own water filters. (less)

Subject:
Mathematics and Statistics
Science and Technology
Material Type:
Activities and Labs
Lesson Plans
Provider:
TeachEngineering
Provider Set:
TeachEngineering
Author:
Amy Kolenbrander
Janet Yowell
Jessica Todd
Malinda Schaefer Zarske
Dive Into Worlds Within the Sea
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Dive Into Worlds Within the Sea

This OLogy activity, a hide-and-seek game, introduces kids to the many different ... (more)

This OLogy activity, a hide-and-seek game, introduces kids to the many different ecosystems in the ocean. The activity opens by telling kids that the ocean is made up of many different communities called ecosystems, and that all living things in an ecosystem depend on each other. Then, in the Think and Link game, kids are challenged to connect all the featured organisms in three ecosystems. (less)

Subject:
Science and Technology
Material Type:
Activities and Labs
Games
Provider:
American Museum of Natural History
Provider Set:
American Museum of Natural History
Dive and Discover: Juan de Fuca Ridge
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Dive and Discover: Juan de Fuca Ridge

Dive and Discover brings you right aboard the expedition to the Juan ... (more)

Dive and Discover brings you right aboard the expedition to the Juan de Fuca Ridge in the Pacific Ocean, where scientists are exploring hydrothermal vent fields and microbes inhabiting hydrothermal vents. The site gives you access to the latest oceanographic and deep submergence research from a variety of scientists including geologists, geophysicists, chemists, and biologists who are exploring the seafloor and making amazing deep-sea discoveries. The mission and objectives, daily updates, photos, videos, and e-mail correspondence with scientists aboard research vessels allow you to follow the progress of the scientific mission and find out about life on the floating laboratories at sea. Deeper discovery links allow the user to further explore the related topics of mid-ocean ridges, hydrothermal vents, and vent biology. This web page also provides links to other Dive and Discover expeditions, other deeper discovery topics, a teacher's page, and further Dive and Discover information. (less)

Subject:
Science and Technology
Material Type:
Activities and Labs
Provider:
Woods Hole Oceanographic Institution
Provider Set:
Microbial Life (MLER) (SERC)
Dramatic Evaporation of the Aral Sea
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Dramatic Evaporation of the Aral Sea

DISAPPEARING WATER: THE ARAL SEA OVER TIME, FROM 1973 TO 2001 A ... (more)

DISAPPEARING WATER: THE ARAL SEA OVER TIME, FROM 1973 TO 2001 A time series is a powerful illustrative tool. Where in the case of Las Vegas we see the direct effects of people on the land, in the case of the Aral Sea, separating the countries of Kazakhstan and Uzbekistan, we see indirect, but no less dramatic effects on a different part of the world. The Aral Sea is actually not a sea at all. It is an immense lake, a body of fresh water, although that particular description of its contents might now be more a figure of speech than practical fact. In the last thirty years, more than sixty percent of the lake has disappeared. As you'll see in the visualization, the change over time is dramatic. In the 1970s, farmers and state offices opened significant diversions from the rivers supplying water to the lake, sending millions of gallons to irrigate cotton fields and rice paddies. So voluminous were these irrigation sluices that concentrations of salts and minerals began to rise in the shrinking body of water. That change in chemistry has led to staggering alterations in the lakes ecology, causing precipitous drops in the Arals fish population. A secondary effect of this reduction in the Aral Seas overall size is the rapid exposure of the lake bed. Powerful winds that blow across this part of Asia routinely pick up and deposit tens of thousands of tons of now exposed soil every year. This has not only contributed to significant reduction in breathable air quality for nearby residents, but also appreciably affected crop yields due to those heavily salt laden particles falling on arable land. In the following sequence of images, we see a series of Landsat scenes taken several years apart. As the years pass, we see the profound reduction in overall area covered by the Aral, and a commensurate increase in land area as the floor of the sea now lies exposed. (less)

Subject:
Science and Technology
Material Type:
Other
Provider:
NASA
UCAR Staff
Provider Set:
NASA GSFC Scientific Visualization Studio
Scientific Visualization Studio
Author:
Darrel Williams
Joycelyn Thomson
Drinking Water; Kids' Stuff
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Drinking Water; Kids' Stuff

This site teaches kids about the importance of safe drinking water through ... (more)

This site teaches kids about the importance of safe drinking water through teaching and learning resources such as an activity on how to build your own aquifer, experiments on the water treatment process, and the drinking water art project. (less)

Subject:
Science and Technology
Material Type:
Activities and Labs
Lesson Plans
Provider:
Environmental Protection Agency
Provider Set:
U.S. Environmental Protection Agency