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13.03.2021 •
Chemistry
Question 6 Jackson visited the Grand Canyon with his family. He noticed that when he stood at the edge of the canyon and yelled is brother's name, he could hear his brother's name being repeated. Which of the following best explains why Jackson was able to hear an echo of his brother's name?
A)Sound travels as a wave that can be refracted and reflected by the particles of air around the edge of the canyon creating an echo.
B) Sound travels as a wave that can be absorbed by the walls of the canyon and passed back to Jackson's ear creating an echo.
C)Sound travels as a wave that can be refracted by the walls of the canyon creating an echo.
D)Sound travels as a wave that can be reflected by the walls of the canyon back into Jackson's earn as an echo.
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Ответ:
c
Explanation:
Ответ: