Question 15 Marks

$1.$Wind instruments	$a.$vibrating string
$2.$Stringed instruments	$b.$frequency
$3.$Percussion instruments	$c.$ vibrating air column
$4.$Pitch	$d.$ vibrating stretched membrane
$5.$Loudness	$e.$amplitude

Answer

$1.$Expansion in length	$c.$vibrating air column
$2.$Water to water vapour at $100^\circ C$	$a.$vibrating string
$3.$Expansion in volume	$d.$ vibrating stretched membrane
$4.$Expansion in area	$b.$frequency
$5.$Water to water vapour at $25^\circ C$	$e.$amplitude

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