Match each pair by selecting correct answer from the dropdown menu.
Then click the Check button to see your result.

Caused by vibrations	Sound Bell jar Echo 1,000 m/s Echo sounding Decibel Medium Eardrum 340 m/s
Sound reflected from a surface	Sound Bell jar Echo 1,000 m/s Echo sounding Decibel Medium Eardrum 340 m/s
Needed for sound to travel	Sound Bell jar Echo 1,000 m/s Echo sounding Decibel Medium Eardrum 340 m/s
Used to find ocean depth	Sound Bell jar Echo 1,000 m/s Echo sounding Decibel Medium Eardrum 340 m/s
Unit of sound intensity	Sound Bell jar Echo 1,000 m/s Echo sounding Decibel Medium Eardrum 340 m/s
Thin membrane separating the outer ear from the inner ear	Sound Bell jar Echo 1,000 m/s Echo sounding Decibel Medium Eardrum 340 m/s
Shows that sound needs a medium	Sound Bell jar Echo 1,000 m/s Echo sounding Decibel Medium Eardrum 340 m/s
Speed of sound	Sound Bell jar Echo 1,000 m/s Echo sounding Decibel Medium Eardrum 340 m/s