1) How do sound waves travel? a) In a straight line b) In a curvy line c) In straight lines and in all directions 2) Sound is a form of. . .  a) energy. b) light. c) music. 3) Sound is produced by the . . .?. . . of objects. a) vibrations b) waves c) noise 4) Vibrations make what? a) silence b) waves c) light 5) Sound can travel through. . . a) space b) air c) water 6) At a music concert, the sound is. . . a) soft b) quiet c) loud 7) In the library the sound of your voice must be. . . a) loud b) quiet c) soft 8) Sound's pitch can be. . . a) both high and low. b) only high. c) only low. d) loosening the string 9) What is it called when sound is unpleasant and loud? a) music b) singing c) noise

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