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Turbulence Composed by David Alan Earnest An Idaho Composer! David Alan Earnest • David Alan Earnest is a Nampa, Idaho native now residing in Boise. David graduated from Vallivue HS, and has a bachelor’s degree in composition from the Wheaton College Conservatory. He has been composing in the Treasure Valley for over 25 years. • “Turbulence” a concert overture commissioned by the Boise Philharmonic, was performed 7 times by the Houston Symphony in 2012, and was previously performed by the Boise Philharmonic in May of 2013. What Does Wind Sound Like . . . • In nature? • Make a noise with your mouth to sound like wind in nature • In music? • Listen to “Turbulence” by David Alan Earnest Click Here! (teachers after starting the music minimize that screen, so the students can think about the questions below as they listen) • What sounds do you hear that represent the wind? • How does the rhythm and tempo represent the wind? • After the music finishes, discuss your ideas as a whole class – be respectful of all students’ ideas What causes wind? • Wind is caused by the weight of the air. Since cold air is heavier than warm air, it has a greater pressure and sinks. When this air is heated up by the sun, it rises and is replaced by new cool air that rushes in. Usually, wind blows from areas of high pressure to areas of low pressure. • From: http://w3.shorecrest.org/~Lisa_Peck/Physics/syllabus/phases/gases/gaswp0 5/abi1/home.html Let’s create air pressure! Click on the picture to look at a map of wind patterns in the United States (Teachers click the x on the advertisement to get the whole screen) • As you look at the map, think about these questions: • What is the windiest area of the USA? • What area has the least wind? • Why do you think that is? This is the science of PHYSICS