identify and describe, using their observations, physical changes in a material that can alter the sound it makes (e.g., the differences in sound when a loose rubber band and a stretched rubber band are plucked);
(a loose rubber band and a stretched rubber band; are plucked; ) (a material; can alter; the sound it makes (e.g.) (the sound; makes; it)
a loose rubber band and a stretched rubber band a material the sound
are plucked can alter makes
the sound it makes (e.g.
it