The questions asked and answered in this episode include: What is harmony exactly? What does it take to be a great rapper? How does sound travel?

Although beyond human hearing, these sound waves can perform important tasks, especially in medicine

In this lesson, students use transformations of trigonometric functions to explore how sound waves can interfere with one another, and how noise-canceling headphones use incoming sounds to figure out how to produce that sweet, sweet silence.

In this activity, students explore how sound waves travel through various materials.

In this activity, students will gain an understanding of how sound waves travel through different media by building a sound transmission device.

Students will explore the parts of a sound wave and learn about human reception of sound. Then, they will research and analyze the types of ultrasound before making a claim as to the most beneficial type to human health and well-being.