Can passengers in NASA’s Vomit Comet Float Around in a state of weightlessness? Yes, passengers in the plane can float during the ride but only for short periods lasting only about 30 seconds. Only in orbiting space craft do astronauts continuously float. In the KC-135, commonly called the Vomit Comet for obvious reasons, there are […]
Archives for 2010
Starch Digestion in Your Mouth
Digestion is the process by which your body changes the food you eat to forms that your body can use for repair, building, and energy. Digestion starts in your mouth where special digestive juices change starch into sugar. Starch is a large chemical generally stored in plants and sugar is a type of chemical that […]
Evaporation: Cools Skin
Evaporation Evaporation is a change from a liquid to a gas. Evaporation occurs below the boiling point of the liquid. This means that water will evaporate a temperatures below 212 degrees Fahrenheit (100 degrees Celsius). Activity Wet a cotton ball (or sponge) with water. The objective is to wet a small place on the skin, […]
Butterfly: Open Wings
Butterflies are cold blooded. This means they must warm themselves in sunlight. When a butterfly is chilled, it opens its wings as shown in the photo. This allows sunlight to warm each part of their wings.
Sound: Blowing a Raspberry
Blowing a Raspberry means to make a sound by sticking out your tongue and blowing. The sound produced is much like the sound made by flatulence (farting). Sounds are made when something vibrates and air blown between your tongue and lips causes both to vibrate as seen in the video.
Zoology Project Ideas
Research Select a topic that you find interesting, then learn as much as you can about it. This is called RESEARCH. Research is done by reading as well as by asking people in the know, such as your teacher, parents, librarian, etc… If you can think of an experiment to answer the questions, then you […]
Astronomy Science Project
Overview for an Astronomy Project Your entire project is about a science question you choose to solve. Thus, the project question is very important. The following gives you a “bird’s eye view” of how to select an astronomy question and how to evaluate the question. I. RESEARCH A. “Tinkering” Research or ” I Don’t Know […]
Cohesion: Surface Tension
What is Cohesion and How does it Relate to Surface Tension Cohesion is the attraction that like- molecules have for each other. Water molecules have an attraction for each other. This attraction is called cohesion. Surface Tension Surface tension is the skin-like surface of a liquid due to the cohesive forces between the liquid […]
Sound Facts
Sound is a form of energy produced by the vibrations (back and forth or to and fro motions) of a material. Sound is energy that can be heard by the human ear. It takes energy to produce a sound. For example, the test tubes shown in the photo are filled with different amounts of colored […]
Engineering Project Winner
GARRETT YAZZIE Garrett participated for the first time in the third annual Arizona American Indian Science and Engineering Fair (AISEF). He made a solar powered heater out of aluminum cans and a car radiator from an old Pontiac, which he found at a junkyard. He says his mother and his science teachers influenced him the […]
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