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Part of the "Active Physics, Third Edition" series. Contains the following sections: "Using Models: Intersections with a Yellow Light," "Sports Montage Introduction," "Conservation of Energy: Defy Gravity," "Safety Montage Introduction," "Acceleration Due to Gravity: Free Fall on the Moon," and "Modeling Human Motion: Bounding on the Moon."
(Source: DCMP)
It was a decade of big bands and big bangs. During the Second World War, the 1940s bring some of the greatest inventions of all time. And in the peaceful years that followed, all that inventing know-how would carry on in ways never imagined. Featured inventions include: the jet engine, the computer, the microwave oven, kitty litter, and the Crash Test Dummy.
Scientists in the Netherlands are working on creating man made meat. They are attempting to grow hamburger meat in a test tube.
One of the oldest, most successful arthropods on Earth, horseshoe crabs have existed for over 350 million years. But in recent years their populations, have crashed by 75% from overfishing, resulting in moratoriums on catching them. Few of us know that most human lives depend on the valuable, shockingly blue blood of these "living fossils." Even more surprising, a tiny shore bird, the red knot, is so dependent on them that the crabs' population crash may make these long-distance flyers extinct. This mystery of mutual dependencies emerges from filmmakers and scientists revealing a disturbing ecology story ranging from the Arctic regions to the southern tip of the Americas.
In Miki, Japan, a six-story wooden model condominium was shaken by the equivalent of a 7.5 magnitude earthquake. The test was said to be the largest simulated earthquake ever attempted with a wooden structure. The full-scale building sat on a metal shake table that rocked it violently back and forth. The table, designed to hold up to 2.5 million pounds, reproduced forces based on those recorded during the 1994 earthquake in Northridge, California. But, it was scaled up by 180 percent to simulate an earthquake so violent it would only occur an average of once every 2,500 years. Part of the "Science Nation" series.
Animal trainer Brandon McMillan puts several dogs through rigorous training and obedience exercises. His ultimate goal is to ensure the dogs are ready to join their new families. Brandon also makes sure the families are equipped to handle the task of being a dog owner. Part of the "Lucky Dog" series.
Coral reefs are particularly sensitive to ocean acidification, which has decreased their ability to form skeletons. Ocean acidification is also causing reefs to crumble and disappear. Part of the "Coral Comeback" series.
University of Pennsylvania ecologist Peter Petraitis, California State Northridge biologist Steve Dudgeon, and their team have been returning to Maine’s rocky intertidal zone every spring and summer for nearly two decades. With support from the National Science Foundation (NSF), they survey a network of 60 experimental plots. The big question that brings them back year after year: Is an ecosystem like this a stable and permanent fixture, or, under harsh conditions, could it reach a tipping point? The idea is that changes in conditions could cause a switch from one community to another, such as from mussel beds to rockweed, and then back again. Part of the National Science Foundation Series “Science Nation.”
A Category 5 hurricane is a monster of a storm that most people would want to avoid. But, Civil Engineer Arindam Chowdhury actually recreates those monster hurricane force winds in hopes of helping people better prepare for the real thing. With support from the National Science Foundation, Chowdhury and his team at Florida International University and the International Hurricane Research Center designed a 15 foot tall Wall of Wind (WOW). The goal is to see if low rise structures and building materials can withstand the same wind forces they would face in a full-blown hurricane. Part of the National Science Foundation Series “Science Nation.”
Scientists at NASA’s Jet Propulsion Laboratory discuss how to turn observations into a testable question. In this segment, they give examples of possible testable questions for students to use when thinking about their science fair project. Part of the “How to Do a Science Fair Project” series.
In this episode, host Dianna Cowern investigates the biomechanics of butts. What activates one's butt muscles more, running or squatting? How effective are bridges as a workout? How much can individuals change the shape of their bodies with exercise? Dianna and Dr. Rowley conduct various experiments to answer these questions about anatomy and physiology. Part of the "Physics Girl" series.
It was an email from a colleague that tipped off environmental engineer Detlef Knappe of possible 1,4-dioxane contamination in the Cape Fear River Basin, North Carolina’s largest watershed and a source of drinking water for communities across the state. The Environmental Protection Agency has classified 1,4-dioxane as a probable human carcinogen. With support from a National Science Foundation grant, Knappe and his team at North Carolina State University have begun to identify 1,4-dioxane sources and how 1,4-dioxane impacts drinking water quality. Knappe is also working with managers at water treatment plants and state policymakers in North Carolina to improve testing and treatment standards for 1,4-dioxane. Part of the National Science Foundation Series “Science Nation.”
Researchers at the state-of-the-art Structural Engineering and Materials Laboratory at the Georgia Institute of Technology are using a full-scale model building to test new ways to protect structures from earthquakes and potentially save lives. The three-story concrete building is based on designs common through much of the 20th century. It has been subjected to round after round of simulated temblors to test if materials such as carbon fiber or new shape-memory alloys can be used to reinforce the structure so it would remain standing in moderate to strong earthquakes. With support from the National Science Foundation, structural engineer Reginald DesRoches and his team have developed a series of retrofits of varying cost and intrusiveness to give building owners in quake-prone areas a range of choices for hardening their property.
Elevators move the equivalent of the world's population every 72 hours, but how safe are they? In this episode, experts test the strength of cables against gravitational pull with surprising results. Find out what it takes to work against the force of gravity. Part of the "Break It Down" series.
Dr. Kimbro and Dr. Hughes devise an experiment to measure how well juvenile oysters (spat) fare at various test sites. They hope to better understand how predators and environmental factors affect the spat’s chances of survival. Part of the series "In The Grass, On The Reef."
Scientists search the earth and sea for new medicines, knowing that half of today's curative preparations come from or contain ingredients from nature. Names some plants that provide components for familiar medications, and notes, for example, that 3,000 plants help control or fight different cancers. The research process to locate, refine, and test new drugs is long and complex. Natural substances from rain forests, marine life, and even soil have enormous potential for healing.
Part of the "Active Physical Science" series. Provides an overview of the basic concepts of physical and chemical science. Contains the following sections: (1) "Air Quality," which contains "Test of Two Gasses Using a Glowing Splint," "Combustion in a Car Engine," "Convection," and "Inversion"; (2) "Energy," which contains, "Student Rube Goldberg Machines" and "What Affects a Cart's Kinetic Energy?"; and "How Do Machines Help Build Big Things?"
Self-taught scientists and engineers, Wilbur and Orville Wright taught the world how to fly and are one of America’s greatest success stories. Their first successful flight, on North Carolina's Outer Banks, took place in December 1903. Next, they returned to Dayton, Ohio and continued to develop and test the world's first practical airplane.
Gene therapy is a method for treating inherited diseases by delivering corrective versions of genes to patients. Dr. Jean Bennett and Dr. Albert Maguire focused their careers on developing a successful gene therapy for an inherited form of childhood blindness called Leber congenital amaurosis (LCA). This documentary tells the story of how the LCA gene therapy was developed. Students will learn how autosomal recessive conditions are inherited, how scientists can use modified viruses to deliver human genes to cells, what makes the eye an ideal tissue for gene therapy, and how model organisms are used to test treatments before they are tested in patients.
Lab experiments test for oxygen and show its reaction to iron and carbon.
Showing collections 1 to 5 of 5
Resources related to vision
A collection containing 12 resources, curated by Charles LaPierre
A collection of Chemistry related resources
A collection containing 67 resources, curated by Benetech
A collection of simulations from PhET.
A collection containing 15 resources, curated by Charles LaPierre
Biology related concepts
A collection containing 59 resources, curated by Benetech
Resources to teach younger students about animals
A collection containing 58 resources, curated by DIAGRAM Center
