Question

1. compression

a space in which particles have been spread apart
2. periodic energy
an oscillating source of energy that repeats itself in a regular way
3. pulse
a non-recurrent wave
4. rarefaction
a space in which particles have been pushed together

Answer 1

Compression: a space in which particles have been pushed together

Periodic energy: an oscillating source of energy that repeats itself in a regular way

Pulse: a non-recurrent wave

Rarefaction: a space in which particles have been spread apart

Answer 2

what do you want me to do theres no question