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Video: Sound Bill Nye (23 min) Do NOT write on this page 1. Sound is__________or_________of air. 2. An oscilloscope lets us__________soundwaves. 3. An ear has a cup shape design to 4. Sound travels __________ 5. The signal gets sent to your __________ sound. through a metal pipe than it does in air. ____________so it can be interpreted. 6. Increased frequency of a wave (more waves per second) results in a 7. A lower frequency ( less waves per second) results in a 8. All music, ____________ ____________ in the world, is from only 9. Sounds above 20,000 are called ____________. ____________ pitch. pitch. ____________ notes. Bats and whales are able to hear these sounds even though we cannot. 10. The ultrasound is ____________ _____________ 11. When you strike a key on the piano, that makes a 12. The vibration is what makes 13. Things 14. inside the piano _______. ________________. ________________ ________________ ______ for us to hear it. at their natural ________________. are specialized structures to catch sound. 15. When you speak, your vocal cords ______________ and this creates _____________.