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Level U How Sound Works Quick Check Name ___________________________________ Date _____________ instructions: Read each question carefully and choose the best answer. 1. What is true about sound? 4. What is a cochlea? a It is a form of energy. aa type of hearing aid b It is caused by vibrations. b a snail-shaped part c Its waves move through c a device used to measure d a musical instrument used air, water, and solids. d all of the above 2. How do hearing aids work? a They make sounds louder. b They trigger the inner ear to work. c They change the frequency d They bypass the inner ear of sounds. and go directly to the brain. 3. L ow-frequency sound waves create a sound that _________. a travels quickly b has a low pitch c has a low volume d travels through water of the inner ear the frequency of sound to make a low frequency 5. W hat interprets sound and gives your body commands? a outer ear b inner ear c middle ear d brain 6. Which statement is true? a A high-frequency wave b All sound waves travel at c A high pitch is caused by d A sonic boom is created by always has loud volume. the same rate of speed. fast-moving sound waves. the low pitch of thunder. Quick Check continued on following page © Learning A–Z All rights reserved. www.readinga-z.com Level U How Sound Works Quick Check (continued) Name ___________________________________ Date _____________ 7. What is onomatopoeia? 10.What could cause permanent hearing loss? aa bone in the middle ear b words that imitate sounds a machinery c a certain frequency of sound b loud music d t he nerve running from the c clanging metal d all of the above ear to the brain 8. W hich is the best summary statement for the section subtitled “How Is Sound Used?”? a Animals are able to use sound to communicate what they want to other creatures. b Sound is used by people and other animals to warn, to live better, and to communicate. c There are many new and d Sound is helpful to humans innovative ways humans are using sound today. because it warns them of danger. 9. Echolocation helps bats ________. a find their homes b hear their young c find food at night d communicate with others © Learning A–Z All rights reserved. 11.Why does sound travel more quickly in colder air than in warmer air? a Colder air is closer to the earth. b Particles are closer together c Particles are closer together d all of the above in colder air. in warmer air. 12.Which substance would sound travel through the slowest? a oxygen b milk c door d wall 13.Extended Response: Explain in sequence how ears work in humans. 14.Extended Response: Explain two ways sounds are helpful to you in your world. www.readinga-z.com