What is a Sonic Boom?

Hi, I’m Emerald Robinson, and in this “What Is” video, we’re going to answer the question, “What is a Sonic Boom?” A sonic boom is the noise produced by something moving through the air faster than the speed of sound. But how is a sonic boom produced? As an object moves through air, it forces air […]

What is Bacteria?

Hi, I’m Emerald Robinson, and in this “What Is” video, we’re going to take a look at one of nature’s smallest yet most influential organisms: bacteria. Bacteria, sometimes called “prokaryotes,” are microscopic single-celled organisms that lack a nucleus and other membrane-bound organelles. Most bacteria have the same major parts: a protective cell wall, a cell membrane, […]