464 resources and 7 collections matched your query.
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Organic acids, found in common foods, appear as citric acid (lemons), acetic acid (vinegar), and malic acid (apples). Also shows esterification and the formation of an ester.
(Source: DCMP)
Figure 2.17 (OpenStax, Biology 2e) caption: The adhesive forces exerted by the glass' internal surface exceeding the cohesive forces between the water molecules themselves causes capillary action in a glass tube. (credit: modification of work by Pearson-Scott Foresman, donated to the Wikimedia Foundation)
(Source: OpenStax)
Actinium is a chemical element with the symbol Ac and atomic number 89.
(Source: Library Lyna)
Many endangered animals are protected under the U.S. Endangered Species Act. The Endangered Species Act of 1973 is one of the most effective conservation laws in the United States. Using science-based management plans, it has prevented the extinction of 99% of the species it protects. Part of the "Endangered Ocean" series.
Introduces physics concepts as they relate to mechanics, optics, and electricity. Supports the learning of these concepts in tandem with the textbooks also offered by the publisher. Encourages hands-on activities.
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."
Weather is the state of the atmosphere, and it refers to the day-to-day temperature and precipitation activity. The difference between air pressure, temperature, and moisture influence weather-related phenomena. Other topics covered include evaporation, relative humidity, clouds, precipitation, rain gauge, air mass, front, thunderstorm, hurricane, tornado, weather forecast, meteorologist, and satellite imagery.
On a nature reserve in California, researchers have discovered that one family of Acorn Woodpeckers is responsible for the tens of thousands of holes in trees. The woodpeckers store their nuts in the holes they bore. Segment of video from Wild Chronicles Series.
How do biologists answer questions and solve problems? Within the context of answering this question, data collection, recording, and analysis are overviewed. Examines two animal behaviors: feeding and communication. Illustrates the different behaviors of lions, alligators, and chimpanzees, and then highlights the "waggle dance" used by bees. Supports the learning of these concepts in tandem with the textbooks also offered by the publisher.
What the microscope did to unlock the secrets of biology, the chemiscope is intended to do, to revolutionize chemistry. The ultimate goal is to observe chemistry in the act, to see the making and breaking of bonds in real-space and real-time. Part of the National Science Foundation Series “Science Nation.”
Acids and bases are important to many chemical processes: maintaining a stable internal environment in the human body, baking a delicious cake, or determining whether a lake can support aquatic life. Reactions involving acids and bases can be described through the transfer of protons. The reactions of acids and bases, which can be monitored with indicators, can range from corrosive behavior to neutralizations that leave no acids or bases behind. To understand the controlling of pH of solutions, buffers are discussed in the laboratory and in the chemistry of the bloodstream. Part of Chemistry: Challenges and Solutions 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.
Take a look through a microscope at a virus attacking a cell and see the immune system in action. Viruses continue to replicate until they break apart the host cell and start spreading throughout the body, destroying healthy cells along the way. The immune system overpowers a virus with white blood cells and creates the antibodies that kill the same types of viruses quickly if they return.
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.
Students investigate important processes including photosynthesis, reproduction, growth, and germination. They also learn how these processes relate to the structure of plants. Important terminology includes flower, pistil, stamen, pollen, pollination, and reproduction.
The geologic processes of mountain building, seafloor spreading and volcanoes are a few examples of the power of plate tectonics. Footage filmed on-location in Iceland, the Canadian Rockies, and Crater Lake help viewers understand the theory of plate tectonics. Colorful animations illustrate the movement of tectonic plates and the role this plays in the development of geologic features. Other terminology includes: theory of continental drift, mid-ocean ridge, plate boundaries, subduction, convergent boundary, and divergent boundary.
Physical activity and quality sleep are both vital for healthy bodies, as well as healthy brains. Viewers learn the relationship between activity, boredom, and sleep and how each plays a role in healthy development of children. Part of "The Brain" series.
Professor Lawrence Gilbert and his team at the University of Texas at Austin have discovered a population of tropical butterflies that exemplify "evolution in action," and a rare research opportunity. Gilbert says they may be witnessing a species of butterfly splitting into two different species. The stars of this research are the Heliconius butterflies, found in Central and South America. Despite the genetic similarities between the two groups of the butterflies, one group is showing a color preference during mating. With support from the National Science Foundation, Gilbert and his team are working to gain insights about genetics, behavior, ecology, and evolution.
The body is like a self-supporting hospital, able to deal with its own with wounds, bacterial invasions, fractures, and obstructions to its various passages. Follows the sequence of events over seconds and weeks when skin or bone is damaged, and shows the defensive reactions of blood clotting, fever, and mending of bone fractures.
Dr. Riki Ott is a whistle blower who predicted the Exxon Valdez oil spill before it happened. She is also a toxicologist, author, and activist who spent time organizing the Gulf Coast communities in response to the BP Deepwater Horizon disaster. Various citizen groups have followed Dr. Ott's example to change and strengthen efforts to curb oil pollution of America's lands, rivers, and coastal waters.
Showing collections 1 to 7 of 7
A collection of Chemistry related resources
A collection containing 67 resources, curated by Benetech
3D models and images of the entire periodic table of elements
A collection containing 118 resources, curated by Library Lyna
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
Resources related to vision
A collection containing 12 resources, curated by Charles LaPierre
