Speech Work: Consonants /s/ and /z/
The /s/ sound
/s/ – The blade or tip of the tongue is in contact with the alveola ridge and this obstructs the flow of air without no vibration as a result of the widening of the vocal tract. It is a voiceless sound and the spelling symbols occurs in all the three positions.
“c” – cell, cite, pencil
“s” – basic, sew, basis
“ss” – mass, essay, ass
“sc” – science, scent, descent
“se” – mouse, cease, base
“ce” – ice, price, nice
The /z/ sound
The blade or the tip of tongue is in contact with the alveolar ridge causing an obstruction to the outflow air with vibration as a result of the narrowing of the vocal tract or cords. It is a voiced sound and the spelling system for /z/ are as follows:
“z” – zoo, zebra, zeal
“x” – exact, examine, exit, xylophone, xerox
“s” – has, cousin, phrase, toads, mangoes , busy
“ss” – scissors, possess, dessert, dissolve
“zz” – dizzy, puzzle, fizzle
Word contrast between /s/ and /z/
In a tabular form contrast the following sounds:
false, gross, falls, sips, loose, zips, hence, lose, hens, passing, decrease, parsing, disease.
New Concept English Book 1, Page 141 by F. Ademola et al.
Multiple – Choice Questions Ex 11 (Nos 1 – 5)
Reference: New Concept English Book 1 For Junior Secondary Schools by F. Ademola et al.