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Sound JEOPARDY Play It I Can’t Again Hear You Sound Energy Too Much Noise! Can We Talk? 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300 400 400 400 400 400 500 500 500 500 500 Can We Talk? 100 • The use of echoes to help animals find their way and food is called…. • Echolocation Return to board Can We Talk? 200 • Any sounds that are too high for humans to hear are called… (hint: machines can send out these high frequency waves and then make a picture of the echoes) • Ultrasound Return to board Can We Talk? 300 • Sounds below the human hearing range are called….. (hint: elephants make sounds this low) • Infrasound Return to board Can We Talk? 400 • This common household machine turns sound energy into electrical energy and then back to sound again. • Telephone Return to board Can We Talk? 500 • This device measures how long it takes for an echo to return. It is generally used by submarines and fishing boats to determine the object’s distance. • Sonar Return to board I Can’t Hear You 100 • This part of the outer ear contains ear wax…. • Ear Canal Return to board I Can’t Hear You 200 • Name the 3 small bones of the middle ear…. • Hammer, Anvil, Stirrup Return to board I Can’t Hear You 300 • A thin, tight membrane that vibrates…….. • Ear Drum Return to board I Can’t Hear You 400 • This inner ear structure contain fluid which vibrates tiny hair cells…. • Cochlea Return to board I Can’t Hear You 500 • Which nerve carries electrical signals to the brain? • Auditory Nerve Return to board Play It Again 100 • A measurement of how high and squeaky or low and deep a sound is…. • pitch Return to board Play It Again 200 • A measure of how many compressions pass a certain point every second. • Frequency Return to board Play It Again 300 • Frequency is measured in a unit called…. • Hertz (Hz) Return to board Play It Again 400 • The distance from the top, or crest, of one wave to the next is called…. • Wavelength Return to board Play It Again 500 • As an object making a sound moves, the pitch changes (think of a motorcycle coming toward you, then passing you). This is called… • Doppler effect Return to board Too Much Noise! 100 • What well-known kids toy is often used to show how a sound wave moves? • Slinky Return to board Too Much Noise! 200 • A measure of how loud or soft a sound is. Loud sounds have a lot of energy or ….. • Volume Return to board Too Much Noise! 300 • The height of a sound wave is its …. • Amplitude Return to board Too Much Noise! 400 • Volume is measured in ….. • Decibels (dB) Return to board Too Much Noise! 500 • A machine that turns sound waves into pictures. • oscilloscope Return to board Sound Energy 300 • Name the 3 substances or mediums that sound can move through… • Solid, Liquid or Gas Return to board Sound Energy 400 • The pushed-together part of a wave is called a …. • Compression Return to board Sound Energy 500 • Most wave energy travels in upand-down waves, not like sound waves. These waves like radio, TV, microwaves, and UV waves are called…. • Transverse waves Return to board Sound Energy 100 • Sound energy is caused by back-and-forth shaking movements called…. • Vibrations Return to board Sound Energy 200 • Space with nothing in it is known as …… (hint: sound cannot travel through this) • Vacuum Return to board