The reason for this is that the smaller the animal's head, the higher the frequency of … OVERVIEW In the Click and Learn activity “How Animals Use Sound to Communicate,” students explore case studies of how animals use sound and hearingto communicate and how aspects of the trait have been shaped by evolution. Rather, it was also about how we use sound to locate objects. I think aloud that this video wasn't only about how animals communicate with sound. Sound. Use the graph on Page 20: Hearing Range of Different Animals to answer the following questions. If olfactory (scent) signs are the most common form of communication among animals, acoustic signals must surely be the next in line, as animals of all kinds rely to a great extent on their hearing ability in order to succeed and survive. I tell students that we will watch a second video clip. Among mammals, generally speaking, small animals squeak and large ones rumble. a. Calculate the wavelength of a sound in the middle of the human hearing range. www.BioInteractive.org Page Click and Learn How Animals Use Sound to Communicate Student Handout Published May 2017 2 of 6 Page 4: Find Out How You Did 3. Watch the same video again, this time with the researcher’s observations. Click and Learn How Animals Use Sound to Communicate Student Handout Published May 2017 Page 1 of 6 INTRODUCTION Use this handout with the Howard Hughes Medical Institute ’s Click and Learn activity “How Animals Use Sound to Communicate.” You will explore three case studies of how animals use sound and hearing to communicate, and how aspects of the trait have been shaped by evolution. Part of SP#8 is also evaluating sources. How Animals Use Sound to Communicate May 2017 Page 1 of 1 HOW ANIMALS USE SOUND TO COMMUNICATE . We will pause and take notes during this video as well.