-- waves on a Slinky
-- waves on a rope
-- waves on a guitar string
-- waves on a pond when you toss a stone in
-- waves on the ocean
-- waves on a cup of soup when you blow on it
-- seismic (earthquake) waves on the Earth's surface (if you're in a bad place)
All of those /\ so far are mechanical waves.
-- light waves, IF they happen to have the right wavelengths (anywhere longer than infrared waves and shorter than ultraviolet waves)
That one /\ is an electromagnetic wave.
