What is a Storm?

Hi, I’m Emerald Robinson, and in this “What Is” video, we’re going to answer the question, “What is a storm?” A storm is defined as any disturbance in a planet’s atmosphere that brings about a  change in weather. On earth, these changes may include high or gusting winds, rain, snow, sleet, or hail. Specific types of […]

What is a Geologic Fold?

Hi, I’m Emerald Robinson, and in this “What is” video, we’re going to talk about geology as we try to answer the question, “What is a fold?” A fold is a rock formation that’s been made by flat rocks becoming deformed due to stress and pressure. Folds are created when two plates that make up the earth’s crust […]

What is an Ice Age?

Hi, I’m Emerald Robinson. In this “What Is” video we’re going to take a closer look at ice ages. In 1840, Swiss scientist Louis Agassiz noticed glaciers–huge rivers of ice created by snowfall–occurred throughout northern Europe. As glaciers move they transport rocks and scour the ground beneath them, leaving evidence of their passing. Agassiz theorized glaciers […]

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, […]

What is a Mineral?

Hi, I’m Emerald Robinson, and in this “What Is?” video, we’re going to answer the question, “What is a Mineral?” Mineralogists define a mineral as a substance that: ● Is natural, which means that humans don’t manufacture it; ● Is a solid, that is, it keeps its form at room temperature and; ● Has a distinct […]

What is Fusion?

Hi, my name is Emerald Robinson, and in this “What Is” video, we’re going to talk about nuclear fusion. Keep in mind that fusion is different from fission, which is how we currently generate nuclear energy. During fission, the nuclei of atoms are split apart to release energy. With fusion, the nuclei of atoms are joined, […]

What is the Color of Music?

What is the color of music? Could the “water of life” exist on Mars? A high-tech romance is in the air… And shame on me! On today’s Daily Orbit! “With every beat of my heart—doctors are getting a little closer to a new heart monitor!”  Okay, I thought we’d start Friday off with a little […]

What is Topography?

Hi, my name is Emerald Robinson, and in this “What is” video, we’re going to answer the question, “What isTopography?” Topography is the study of a land’s surface shape – its hills and mountains, valleys, rivers, and craters. Topographers analyze these features, whether they’re on the earth, the moon, an asteroid, or on a distant […]

What is Fire?

Fire is scientifically defined as a chemical reaction that results in heat, light, and smoke. We call this type of chemical reaction “oxidative combustion,” that is, the reaction requires oxygen, and actively burns fuel. Fire is also an “exothermic reaction,” because it gives off heat. When we think of fire, we picture a flame, a […]