What is a repeating sound caused by sound waves bouncing off a surface?
Light and Sound

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Science
•
4th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
echo
2.
FLASHCARD QUESTION
Front
What is the term for a back and forth movement?
Back
vibration
3.
FLASHCARD QUESTION
Front
What do we call light that is taken in and not reflected or transmitted?
Back
absorbed
4.
FLASHCARD QUESTION
Front
What is the process called when light changes direction after bouncing off a shiny, smooth surface?
Back
reflection
5.
FLASHCARD QUESTION
Front
True or False: Sound travels faster through solids than air and water.
Back
True
6.
FLASHCARD QUESTION
Front
What is the speed of sound in air at room temperature?
Back
Approximately 343 meters per second (m/s).
7.
FLASHCARD QUESTION
Front
What is the phenomenon called when sound waves spread out after passing through a narrow opening?
Back
diffraction
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