What is an echo?
Wave Behaviors

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Science
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
An echo is a sound wave that reflects off a hard surface and returns to the listener.
2.
FLASHCARD QUESTION
Front
What does opaque mean?
Back
Opaque refers to a material that allows very little to no light to pass through, making objects behind it invisible.
3.
FLASHCARD QUESTION
Front
What is refraction?
Back
Refraction is the bending of waves due to a change in their speed as they pass from one medium to another.
4.
FLASHCARD QUESTION
Front
What is diffraction?
Back
Diffraction is the bending of waves around obstacles or through openings, causing them to spread out.
5.
FLASHCARD QUESTION
Front
What happens to light when it is transmitted?
Back
When light is transmitted, it passes through a material without being absorbed or reflected, allowing objects behind it to be seen.
6.
FLASHCARD QUESTION
Front
What is reflection in wave behavior?
Back
Reflection is the bouncing back of waves when they hit a surface that does not absorb the energy.
7.
FLASHCARD QUESTION
Front
What is the difference between transparent and translucent materials?
Back
Transparent materials allow light to pass through clearly, while translucent materials allow some light to pass but scatter it, making objects behind them appear blurry.
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