13 resources and 0 collections matched your query.
Library of 3383 accessible STEM media resources.
Showing resources 1 to 13 of 13
Select a resource below to get more information and link to download this resource.
What is frequency? Why is it so important for radio and sound waves? Adabot gets all the answers from Ladyada and a new friend. Part of the "Circuit Playground" series.
(Source: DCMP)
When one hears the roar of traffic, the bark of a dog, or a teacher’s voice, they are experiencing sound. This program uses colorful animations to explore important characteristics of sound, including intensity, loudness, pitch, and frequency. Concepts and terminology illustrated in this video include vibrations, frequency, pitch, amplitude, volume, how sound travels, uses of sound energy, and speed of sound.
A wave carries energy from one point to another through a medium. Types of waves include light, sound, electromagnetic, mechanical, transverse, and longitudinal. Explores a wave's characteristics, such as amplitude, frequency, and wavelength. Also presents the four ways waves interact with mediums. Defines terminology as it is introduced. Quiz after summary.
The Standard Deviants explore Kepler's laws of planetary motion. Next, they discuss simple harmonic motion pendulums. Other topics covered include cycle, amplitude, wavelength, frequency, spring constants, and the restoring force. Part of the "Standard Deviants School: Physics" series.
Great inventions exist in the world of audio and music: stereo, surround sound, and holophonics, all known as 3D sounds. Although holophonics can be confused with surround sound because it tries to create a surrounding with sounds from different sources, holophonics have a completely different system and are only emitted through a stereo system, which when used with headphones and creates a sense of three-dimensionality.
Global warming is changing the intensity, duration, and frequency of precipitation. These changing climate patterns are altering the water cycle and negatively impacting the environment. As the climate of regions changes, life on earth is significantly impacted. The increased potential for flooding raises concerns over loss of life and property, and individual actions are critical to lessen global warming and climate change. Chapter 4 of Air: Climate Change Series.
Elephants can communicate over long distances using low-frequency sounds that travel both in the air and through the ground. Scientists are studying whether elephants can hear and interpret these ground vibrations. Using amplifiers, speakers, geophones, and video cameras, scientists have designed an experiment to test how elephant herds respond to an alarm call when it is played back through the ground.
What is light? How does it operate? What are its properties? Why is it so important to the foundations of our physical world? Examines the nature of light and how it's harnessed in our lives. Explains the basic properties of light and the wave model. Also, discusses the concepts of wavelength, frequency, speed, reflection, refraction, total internal reflection, and dispersion. Explains the EMR spectrum, the color of objects, and the addition and subtraction of colors.
Whether they arise from human causes or forces within planet Earth itself, natural disasters threaten life and civilization with what seems to be growing frequency. Studies troubling developments in marine, arctic, wetland, and urban environments while highlighting research opportunities that may help prevent future catastrophes. Coral reef decay, Everglades habitat loss, polar ice disappearance, and global warming are all analyzed. Looks at earthquake prediction, hurricane and tornado tracking, air pollution monitoring, tsunami warning systems, and the cleanup of toxic flood sediment in New Orleans.
A team of researchers from the University of Utah is perfectly situated to study rock arches. With support from the National Science Foundation, geologist Jeff Moore and his team are pioneering a new method of structural health monitoring to keep tabs on the structural integrity of geological landmarks. The researchers have discovered that each arch has its own "voice." The arches naturally vibrate, like a guitar string, with its own distinct resonant frequency. The team's research has important implications for the conservation and management of these natural structures. Part of the "Science Nation" series.
This album of eight computer-animated video segments looks at the particle approach to studying light by exploring the antithesis of the wave model. Presents black-body radiation, Planck's constant, the photoelectric effect, and the work of James Clerk Maxwell as forerunners to Einstein's concept of photon frequency. Shows examples of a slope-intercept graph and a revised double-slit experiment using light-sensitive paper segue to an illustration of the Compton effect, establishing that light consists of a stream of particles. De Broglie's contributions introduce wave-particle duality, which some might consider an inadequate solution, although it represents the best that current science can do.
Explores the strange and relatively unknown world of sleep-a world in which we spend approximately one-third of our lives. Shows how the discovery of REM (Rapid Eye Movement) during our dream period in the early 1950s by Dr. Nathaniel Kleitman at the University of Chicago brought about an understanding of the mechanism of sleep. Before his discovery, it was believed that during sleep the brain was in a state of rest. Also, overviews the nature and frequency of dreams and nightmares, and sleep disorders such as insomnia, apnea, and narcolepsy that affect millions of Americans.
Hawaii's Kilauea volcano is one of the best places on Earth to study processes within basaltic volcanoes. Its high eruption frequency, easy access to lavas, and distinct geologic setting far from plate boundaries or continents allow researchers to address fundamental problems related to active volcanoes. Another constant at Kilauea, besides the flowing lava, has been University of Hawaii geologist Mike Garcia. With support from the National Science Foundation, Garcia has been leading studies of Kilauea for a generation, adding to the extensive knowledge base on this volcano. Two of the primary goals are to determine what has triggered Kilauea’s effusive, explosive cycles over the last 2200 years and when long eruptions, such as the current one, will stop. Part of the National Science Foundation Series “Science Nation.”
