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Already parts of the world suffer from lack of water, and with increasing demand it's expected to get worse. To better understand and predict drought, thirty universities are collaborating in a multidisciplinary effort called the Shale Hills Project. Among the studies, is field research following the life cycle of water along the Susquehanna River Basin. With support from the National Science Foundation, civil engineer Chris Duffy and his team at Penn State are tracking several aspects of rainfall to better understand the relationship between the flow of water, drought prone areas, and urban populations.
(Source: DCMP)
Part of the "Green Careers" series. Presents an overview of job opportunities in water management, such as flood control, reservoir management, levee design and repair, designing and operating dams and sewer systems, river management and restoration, monitoring fish populations, protecting habitats and endangered species, maintaining natural resources, water conservation, irrigation, landscape design, and more. Jobs profiled include the following: civil engineer, water resource manager, water conservation specialist, and landscaper.
When Hanna helps herself to some water from the river, she finds it very polluted. The children and Suzie work their way upstream searching for clean water. During their journey, they learn about the effects of pollution on the environment. Part of the "My Little Planet" series.
Everyday, real-life examples demonstrate the processes of weathering and erosion. Easy-to-understand examples of weathering help students differentiate between the processes of mechanical and chemical weathering. Footage of weathering and erosion processes help students grasp how each process alters the environment. Important terminology includes: mechanical weathering, landslides, abrasion, freezing, thawing, chemical weathering, oxidation, acid rain, moving water, wind, and glaciers.
Shows how the cerebellum coordinates muscle activity and how position sensors in the muscles and joints and the balancing mechanism of the inner ear function. The motions of a water-skier show the physical, interconnected structure of muscles, joints, and organs. The role of joints is explained, and a look at the interior of a human knee shows clearly how lubricating fluid is produced.
What percent of earth's water is fresh? What are sources of freshwater? What is groundwater and how is it formed? Covers these questions and more in this discussion of water's characteristics, the water cycle, and freshwater's importance. Concludes with a quiz.
Host Dylan Dreyer journeys through the ultimate story of survival on the Alaskan frontier. She witnesses unspoiled landscapes and the raw power of nature as animals and people fight to survive. Part of the "Journey With Dylan Dreyer" series.
The biosphere is a thin zone of land, air, and water that is home to all living things on earth. Discusses its features as well as characteristics of ecosystems and biomes, including biotic and abiotic components. Also covers types of terrestrial and aquatic biomes, and how ecosystems can change through a process called succession. Defines terminology, and concludes with a summary and quiz.
What does it take to get a sailboat moving in the water? With the help of some of the Bay Area’s top aerospace engineers, students learn that sailboats don’t simply rely on wind to push them forward but that there are other invisible forces that are fundamental to the process. In fact, the physical elements that make a sailboat sail are the same ones that make an airplane fly.
A rip current is a narrow, fast-moving channel of water that starts near the beach and extends offshore through the line of breaking waves. If a swimmer gets caught in a rip current, the best thing they can do is stay calm. The current will not pull a swimmer underwater, but it will pull them away from shore. A swimmer caught in a rip current should float and wave for help. Do not try to swim back to shore or against the rip current. Part of the "Danger Zone" series.
Moko is an explorer. As he travels the world continent by continent, he makes many friends and discovers many natural phenomena which sometimes delight him, and other times scare him. Each animated episode recounts an adventure and takes an "original story" approach to explaining these natural phenomena. In this episode, on this morning, Moko is rowing relentlessly to bring back the barge as Mei-Lei sleeps. Suddenly the current shirts, he can't seem to make the oar move at all. He wakes Mei-Lei so she can help him row, but it is no use, the barge starts moving in the opposite direction. In the distance they notice a fisherman and try to call out to him, but he is too far and cannot hear them. Beyond a huge boulder they see a forest and start rowing furiously in its direction. Finally ashore, Moko and Mei-Lei think that the sea still had another secret in store for them, this new part of Mei-Lei's island.
There is a massive southern ocean current almost two miles below the ocean's surface. Recent measurements found it’s the strongest current ever recorded at this depth and transports 40 times as much water as the Amazon River. The current carries dense, oxygen-rich water and has a direct influence on temperatures around the world. Part of the "News of the Day" series.
It started as a project for long term space survival, when NASA estimated that crews headed to or living on Mars would spend 80% of their waking hours farming. But, with support from the National Science Foundation, research into a leaf sensor that could “call in” with its vital statistics morphed into technology that can help farmers on this planet. The goal is to save water by directly measuring a plant’s moisture level.
The Three Gorges Dam is the largest hydro-electric dam in the world. Yet questions abound over environmental and social issues, not to mention the logistic problems of moving ships up and down the river. An ingenious system of ship locks has gone towards solving that problem, echoing the techniques of Banaue farmers in the Philippines who mastered the art of managing water over two thousand years ago.
Deep in Southern Mexico's jungle, the Villa Luz limestone caves support an ecosystem that thrives in a highly poisonous, acidic environment. This rare type of cave is found in few spots on Earth. Geologists and biologists wear gas masks and protective outerwear to explore the caves. All life forms, from microbial colonies to spiders, fish and bats, are interdependent upon the toxic soup of water, sulphur-oxide and hydrogen monoxide for survival.
Figure 2.15 (OpenStax, Biology 2e) caption: When we mix table salt (NaCl) in water, it forms spheres of hydration around the ions.
(Source: OpenStax)
Figure 2.9 (OpenStax, Biology 2e) caption: Two or more atoms may bond with each other to form a molecule. When two hydrogens and an oxygen share electrons via covalent bonds it forms a water molecule.
In the Rosebud River valley, an hour east of Calgary, the water in many homes can be lit on fire. Everyone agrees there's gas in the water. Few agree on why. At Fiona Lauridsen's farm, just outside the hamlet of Rosebud, showering has become a dangerous activity. Fiona and her family developed skin burns from simply taking a shower and Fiona claims that EnCana, Canada's largest natural gas company is responsible. She claims that EnCana has contaminated the aquifer by drilling (fracking) for coal bed methane, a new source of natural gas extraction that often uses chemicals for drilling. Yet in the hamlet, where the Rosebud Theatre is a popular tourist attraction and graciously sponsored by EnCana, most residents refuse to even talk about burning water, for fear of harming the tourist industry.
Investigates both saltwater and freshwater biomes. Explores how ocean temperature, salinity, and depth affect the enormous diversity of marine life. Covers the intertidal, neritic, and open ocean zones and their characteristics. Also examines estuaries and freshwater biomes such as streams, lakes, and ponds. Defines terms and concepts, and reviews content before a quiz.
Water has many everyday uses. Students get a glimpse of all the uses of water and explore its basic characteristics.
Showing collections 1 to 6 of 6
A collection of Chemistry related resources
A collection containing 67 resources, curated by Benetech
Resources to teach younger students about animals
A collection containing 58 resources, curated by DIAGRAM Center
Biology related concepts
A collection containing 59 resources, curated by Benetech
A collection of simulations from PhET.
A collection containing 15 resources, curated by Charles LaPierre
Collection of anatomy resources
A collection containing 21 resources, curated by Benetech
3D models and images of the entire periodic table of elements
A collection containing 118 resources, curated by Library Lyna
