What is the speed of sound in water compared to air?
Waves Review - 1st

Flashcard
•
Physics
•
7th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
Sound travels faster in water than in air.
2.
FLASHCARD QUESTION
Front
What phenomenon occurs when light passes through a medium and changes direction?
Back
Refraction.
3.
FLASHCARD QUESTION
Front
What did the students learn about light passing through black paper after their experiment with uranium salts?
Back
They revised their belief that light could not pass through black paper because the experiment showed evidence to the contrary.
4.
FLASHCARD QUESTION
Front
What type of electromagnetic wave has the highest frequency?
Back
Gamma rays emitted by radioactive materials.
5.
FLASHCARD QUESTION
Front
Why does a penny appear closer to the surface of lemonade when viewed from above?
Back
The light waves are refracted as they enter the lemonade.
6.
FLASHCARD QUESTION
Front
What is the definition of ultrasonic waves?
Back
Ultrasonic waves are sound waves with frequencies above the audible range for humans, typically above 20 kHz.
7.
FLASHCARD QUESTION
Front
What is the relationship between frequency and wavelength in electromagnetic waves?
Back
Frequency and wavelength are inversely related; as frequency increases, wavelength decreases.
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