Answer:

1. When the sound travels through solid, the vibration of the particles occurs ( fast, slowly).

• the sound travels through solid, the vibration of the particles occurs fast.

2. Sound travels through air ( very fast, very slowly).

• Sound travels through air very fast.

3. The medium which can sound waves travel faster is in (solid, liquid).

• The medium which can sound waves travel faster is in liquid than air and solid.

4. When matter (moves, vibrates) sound is produced.

• When matter vibrates sound is produced.

5.(The nature of material, person receiving it) affects the speed of the sound as it travels.

• The nature of material affects the speed of the sound as it travels.

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