Sound Flashcards
1
Q
What is a decibel
A
A decibel is a unit of sound intensity or loudness
2
Q
What is a echo
A
A reflection of a sound wave by an object
3
Q
What is a frequency
A
A frequency is the number of vibrations produced in one second
4
Q
Hertz
A
The unit of frequency
5
Q
Law of reflection
A
The angle of incidence is equal to the angle of reflection
6
Q
Recycling
A
Recycling is the process of converting waste materials into new materials and objects
7
Q
A
8
Q
A
