Science SCI.IV.4.1 Grade: 5 Strand IV: Using Scientific Knowledge in Physical Science Standard 4: Waves and Vibrations - All students will describe sounds and sound waves Benchmark 1: Explain how sound travels through different media. Constructing and Reflecting: SCI.I.1.1 - Generate scientific questions about the world based on observation. • Construct questions for each of the investigations suggested below to guide the design of the investigation. SCI.I.1.2 - Design and conduct scientific investigations. Vocabulary / Key Concepts Context Media: • solids • liquids • gases • vacuum Sounds traveling through solids: • glass windows • strings • the Earth Sound traveling through liquids: • dolphin and whale communication Sound traveling through gases: • human hearing • sonic booms Resources Knowledge and Skills Explain how sound travels through different media. Coloma Resources: Scott Foresman Science – Discover the wonder – Module E pgs E34-39 Other Resources: • • Scope Unit – Now Hear This (fifth grade) Michigan Teacher Network Resources • Primarily Physics. AIMS. • Sound/Light & Color. Bill Nye Video. Disney Educational (800/295-5010). • “Bells in Your Ears” – sound through solid Resources Other Resources: (continued from above) • “Straw Oboes” – sound through gas • The Soundry – ThinkQuest! • BSISD web resources for light and sound • Science Explosion: Waves and Vibrations • Super Slinky, Laser Pointers • AIMS – Echoes Videoconferences Available For more information, see www.remc11.k12.mi.us/dl or call Janine Lim 471-7725x101 or email jlim@remc11.k12.mi.us IV.4.MS.1 Science of Sound from the Cleveland Institute of Music (transformation of energy) Sounds of Science from COSI Toledo Wave Watch from the Louisville Science Center Amazing Sound from the National Science Center Quiet Aircraft Technology: Hear the Latest Buzz from NASA Live! 5th Grade Science Curriculum Technology Resources IV.4.MS.1 Vernier probes available: Microphone Instruction Focus Question: How does sound travel differently in solids and gases? Place a watch in the center of a table and try to hear its ticking from a meter away. Next, rest one end of a meter stick on the watch and let students take turns placing an ear against the other end. (The students should hear the ticking more clearly.) Next, have students place their ear on top of a table to listen to the watch ticking. The teacher might also let the students experiment by holding the watch (or tuning fork) against the various parts of their head (e.g. chin, teeth, jawbone) to discover that sounds may reach the ear through solid parts of the body (e.g. bones). Discuss why (historically) Native Americans (Indians) put their ears to the ground to listen for hoof beats. Discuss possible advantages for animals that live under ground. Assessment Optional Assessment: After students have described the differences in the particles composing solids, liquids and gases, and have examined several musical instruments they will make a cup phone consisting of two plastic cups, and a piece of string held between the cups. As one student speaks into one cup another student listens for the first student’s voice in the other cup. The students should be able to explain how the sound transmitted from one cup to the other and why it is not transmitted when the string is held by one of the students. Each student will complete a lab report that includes answers to the following questions: 1. How is sound transmitted from one cup to the other? 2. Why is sound not transmitted when the string is held by one of the students? 3. What is the difference in transmission through different mediums such as air vs. string? Have the students explain in writing how the sound was transmitted from one end to the other. They should include these terms: particles or molecules of matter, vibration, and collisions between particles. (Give students rubric before activity.) Scoring Rubric Criteria: Correctness of explanation: Apprentice Explains how a cup phone works using the term “vibration” but does not connect particles and collisions to that vibration. Basic - Explains how a cup phone works using the term “vibration” and connects particles or collisions to that vibration. Meets - Explains how a cup phone works using the three criteria (terms from the assessment). Exceeds - Explains how a cup phone works using the three criteria (terms from the assessment) and explains conditions that would prevent the cup phone from working and the reasons why. Teacher Notes: Sound energy is transferred from molecule to molecule by cascading collisions within the medium. “Vibrations in materials set up wavelike disturbances that spread away from the source. Sound and earthquake waves are examples. These and other waves move at different speeds in different materials” (BSL). These waves transfer energy by setting the material (medium) in vibrating motion. The strength of the motion is in the amplitude of the wave; the speed of vibration is its frequency. Focus Questions • • • • How does sound travel through solids, liquids and gases? What is a vibration? How do vibrating objects move? How do mechanical waves transfer energy? Notes The state benchmarks are very deliberately constructed to take students through these topics sequentially and developmentally. For example, students do not talk about sound and light as waves until the high school benchmarks – they only look at vibrating objects and mechanical waves such as those in slinkies or on water in middle school. They recognize sound as produced by vibrations at the elementary level; they study the motion of vibrating objects at the middle school level; and they apply the concepts of vibrations to sounds at the high school level. • Students are not expected to know the speeds of sound in different media.(JCISD)