How do you think animals know we’re around long before they see us? Sure, most have a powerful sense of smell, but they can also hear us first. In this activity, we are going to simulate enhanced tympanic membranes (or ear drums) by attaching styrofoam cups to your ears. This will increase the number of sound waves your ears are able to capture.
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You can use your hands if you want… you just need something to make the external part of the ear larger for the experiment!
Why is a cup needed for making the pinna larger?