Sound and Light Waves Investigations

Karen Latchana Kenney

សីហា 2017 · Lerner Publications ™

សៀវភៅអេឡិចត្រូនិច

ទំព័រ

មានសិទ្ធិ

ការវាយតម្លៃ និងមតិវាយតម្លៃមិនត្រូវបានផ្ទៀងផ្ទាត់ទេ ស្វែងយល់បន្ថែម

អំពីសៀវភៅអេឡិចត្រូនិកនេះ

Much of what you experience—from the things you see to the sounds you hear—travels to you in waves. But how do sound and light waves work? For thousands of years, scientists have been testing hypotheses about waves and learning from the results of observations and experiments. These tests ultimately lead to more questions: How can we see colors? Why can light travel in a vacuum while sound can't? How does the pitch of a sound change as it gets closer to you? The answers are sometimes quite surprising! Find out how sound and light waves help us interact with the world around us.

អំពីអ្នកនិពន្ធ

Karen Latchana Kenney was born near the rainforests of Guyana, but moved far north to Minnesota at a young age. She graduated from the University of Minnesota with a bachelor's degree in English and has been writing and editing since. She has worked as an editor at an educational publishing company, but is now a full-time freelance writer and editor in Minneapolis, Minnesota. She has written more than 70 books on all kinds of subjects: from arts and crafts to biographies of famous people. Her books have received positive reviews from Booklist, Library Media Connection, and School Library Journal. When she's not busy writing, she loves biking and hiking with her husband and young son in the many beautiful parks of the state. Visit her online at http://latchanakenney.wordpress.com/.

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