6. Where does sound travel fastest?
A. air
B. empty space
C. metal
D. water

7. Which of the following materials absorbs most of the energy of sound waves?
A. sound conductor
B. sound diffuser
C. sound generator
D. sound insulator

8. How is sound transmitted or heard?
A. The force of impact between two bodies and the vibrations of bodies cause the air molecules around them to vibrate.
B. The force of impact between two bodies and the sound of bodies cause the air molecules around them to vibrate.
C. The force of energy between two bodies and the sound of bodies cause the air molecules around them to move.
D. The force of energy between two bodies and the vibrations of bodies cause the air molecules around them to move.

9. What do we call a series of sounds caused by the reflection of sound waves from a surface back to the listener?
A. echo
B. sounds
C. tune
D. vibrations

10. You can hear sounds in the following places EXEPT _______.
A. at home
B. in the party
C. outer space
D. radio stations


Right answer = Brainliest
Nonsence = Report

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