Ultrasound refers to a sound wave with a frequency greater than the upper limit of human hearing, which is generally over 20 kHz. In general, humans can hear sounds with a frequency between 20 Hz and 20 kHz.
Faulted Mountains is a feature of continent-continent convergence. Mid-oceanic ridges, Fissure volcanoes and rift valleys are a result of divergent plate boundaries.
EXAMIANS