Sound Flashcards
1
Q
Vibration
A
A back and forth motion that repeats
2
Q
Volume
A
How loud or quiet a sound is in decibels (dB)
3
Q
Pitch
A
How low or high a sound is. A high pitch has a high frequency.
4
Q
Amplitude
A
The maximum amount of vibration measured from the middle
5
Q
Wavelength
A
The distance between two corresponding points on a wave in metres (m)
6
Q
Frequency
A
The number of waves per second. Measured in hertz (Hz)
7
Q
Vacuum
A
A space with no particles of matter in it.
8
Q
Oscilloscope
A
A machine which measures patterns of sound waves with a screen on it
9
Q
Echo
A
When a sound wave is reflected back from a surface
10
Q
What is the highest point of the amplitude called?
A
Peak
11
Q
What is the lowest point of the amplitude called?
A
Trough
