Students explore how sounds are produced and how the sense of hearing detects and interprets sounds. Sound surrounds us, in fact, students will discover that they cannot create silence. They use tuning forks to see and feel the vibrations that are sound waves. Next, students make ear trumpets to catch and amplify sounds just as ears do. They experiment with echoes to see which surfaces absorb or reflect sound waves. They even get a chance to make music. Students model percussion, stringed, and wind instruments as they create sounds by striking, plucking, and blowing. They learn to vary pitch and volume by varying string thickness and tension. For a concluding concert, students tune an orchestra of original instruments.
In the Delta Science Reader Sound, students read about what causes sound, how sound travels, and how sounds are different. They learn how our voices and ears work to allow us to speak and hear. They discover how different types of musical instruments make sounds. They also read about audiologists, people who test hearing. Finally, students find out how certain animals use echolocation to find out about their surroundings.
Click here to view the Teacher Preparation Video for this Delta Science Module.