Sound Waves

mechanical signals

electrical signals

light signals

wave signals

temperature increases

pressure increases in the air

both temperature and pressure decreases in the air

humidity of air keeps on increasing and decreasing

artificial sounds

natural sounds

noise

normal sounds

changing length

changing valves

fingers

sealers

force

power

light

energy

echo

harsh echo

hollow echo

soft echo

ultra high sounds

ultra pitch sounds

ultrasonic sounds

ultraviolet sounds

parallel to the sound direction

perpendicular to the sound direction

opposite to the sound direction

in the direction of the sound

pulse to the sea bed

vibration to the tower

piece of food to fish

beam of sound to check the depth

air has pressure

air has humidity

air has particles

air has temperature