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The decade saw The Great War, The Flu Epidemic and the Titanic disaster. Ten years into the 20th Century and the world is grappling with some serious growing pains. In a decade racked by conflict, there were inventions that made the world both safer and infinitely more dangerous. Featured inventions include: the parachute, the gas mask, the toaster, the Tommy Gun, and sonar.
(Source: DCMP)
Through easy-to-understand examples, this video helps students grasp how sounds are formed and how sound travels. Special attention is given to the different characteristics of sounds and how humans sense sounds.
Introduces how sound is made; how it travels; the terms "pitch," "volume," and "compression waves"; how ears detect sound; and the way vocal cords work. Views the parts of an ear and how they function to allow us to hear sounds. Uses easily replicated experiments to demonstrate sound's principles.
In January 2014, host Emily Graslie accompanied Curator of Mammals, Bruce Patterson, on a field expedition into the bat caves of Kenya. In this second installment, the researchers collect bats at night. The next morning they release the captured bats and try to record the "sounds" made by the different species. Part of "The Brain Scoop" series.
