How do we measure how loud a sound is? Well, the loudness of sound is measured in something called decibels. Short exposure to sounds that are extremely loud can cause pain or even damage hearing, while long exposure to loud sounds can have the same affect. Knowing that loud sounds can damage hearing is important in preventing hearing loss and deafness. Have you ever heard a sound that was so loud that you had to cover your ears? Why did you cover your ears? Did the sound hurt you? It probably did! Without thinking about it, you covered your ears to protect them from the damage of loud sounds. Math Decibel Worksheet Answers (doc) Visit [ to print or download. Similarities and differences in patterns can be used to sort and classify natural phenomena. (Note: This grade band endpoint was moved from K–2.)Īlignment agreement: Thanks for your feedback! Waves of the same type can differ in amplitude (height of the wave) and wavelength (spacing between wave peaks). When waves move across the surface of deep water, the water goes up and down in place there is no net motion in the direction of the wave except when the water meets a beach. Waves, which are regular patterns of motion, can be made in water by disturbing the surface. This activity focuses on the following Three Dimensional Learning aspects of NGSS:ĭevelop a model using an analogy, example, or abstract representation to describe a scientific principle.Īlignment agreement: Thanks for your feedback! Science findings are based on recognizing patterns.Īlignment agreement: Thanks for your feedback! Explain how engineers design technologies to help with hearing loss or injury.ĭevelop a model of waves to describe patterns in terms of amplitude and wavelength and that waves can cause objects to move.Ĭlick to view other curriculum aligned to this Performance Expectation.Describe the amplitude of sound as measured in decibels.Explain that loud sounds can damage hearing.A great understanding of the ear and its physiology is necessary to design these devices.Īfter this activity, students should be able to: A person with a cochlear implant cannot actually hear as a normal person does, but it allows them to have a relationship with speech and hear the environment around them. Together, they collect and send impulses to the brain. The device contains a microphone, a speech processor, a transmitter and electrodes. Cochlear implants are an electronic device that gives a deaf person a sense of sound by surgically implanting the devices under the skin behind the ear. Bioengineers have invented devices to treat deafness, including hearing aids, cochlear implants, placing tubes in the eardrum, and replacing part of the bones in the middle ear with wires. Understanding the level of decibels is necessary for engineers to successfully design devices to fix hearing damage and make new equipment. This engineering curriculum aligns to Next Generation Science Standards ( NGSS). If available, students use a decibel meter to measure sounds. Sound types and decibel readings are written on sheets of paper and students arrange the sounds from the lowest to highest decibel levels. Students learn the decibel reading of various noises and why high-level readings damage hearing.
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