Directions: Give the correct answer. (Numbers 6-10) 6. What is the unit of intensity level for sound? 7. In which material will sound travel the fastest? 8. Can sound travel in a vacuum? Yes or No. 9. Name the part of the ear that is snail-shaped that contains fluid. 10. It is a very small particle of matter that is a part of nucleus of an atom that has a positive electrical charge.
