Question

Brigitte plays a musical instrument called a saxophone.
Her teacher asks her to explain the sound the saxophone makes.
(a) Complete the sentences that Brigitte writes.
Choose from the following words.
contract
energy
expand
force
particle
vibrate
Sound is a type of
Sound is made when the particles in the air​

Answer 1

Answer:

Expand

Explanation:

When sound is made the particles in the air are expands

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