Waves
Flashcard
•
Physics
•
7th - 9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a wave?
Back
A wave is a disturbance that transfers energy from one place to another without transferring matter.
2.
FLASHCARD QUESTION
Front
What is frequency?
Back
Frequency is the number of waves that pass a point in one second, measured in Hertz (Hz).
3.
FLASHCARD QUESTION
Front
What is wavelength?
Back
Wavelength is the distance between two consecutive points of a wave that are in phase, such as crest to crest or trough to trough.
4.
FLASHCARD QUESTION
Front
What is wave speed?
Back
Wave speed is the distance a wave travels in a given amount of time, calculated as speed = frequency × wavelength.
5.
FLASHCARD QUESTION
Front
How do you calculate the speed of a wave?
Back
Speed = Frequency × Wavelength.
6.
FLASHCARD QUESTION
Front
If a wave has a frequency of 20 Hz and a wavelength of 4 m, what is its speed?
Back
80 m/s.
7.
FLASHCARD QUESTION
Front
What is the relationship between frequency and wavelength?
Back
As frequency increases, wavelength decreases, and vice versa, when wave speed is constant.
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