VanCleave's Science Fun

Your Guide to Science Projects, Fun Experiments, and Science Research

Torque: Turning Effort

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Torque Torque is the turning effort. To open a jar, you must apply a turning effort on the lid in a counterclockwise direction. To close a jar, you must apply a turning effort on the lid in a clockwise direction. The lid turns around a point in its center. A merry-go round also turns around […]

Chemisty: Perfume

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I love Meet Me At The Corner videos. They all present information via an interview with someone in the know. The Chemistry of Perfume for Kids video contains an interview with a perfume maker. He has lots of interesting facts about perfume, such as: At one time people put perfume on their gloves. These scented […]

Eye Pupil: Dilated vs. Contracted

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Pupil: Hole in Your Eye The pupil of your eye is the dark spot in the center of your eye. The pupil is actually a hole in your eye covered by a thin skin. Light enters your eye through your pupil. Pupils change size in response to light intensity. Pupils dilate: This means the opening […]

Symbols for Synthetic Elements

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Synthetic elements are man-made. These elements are radioactive (decay giving off radiation). Synthetic elements are often named after the person discovering them or after some famous scientist, such as Einsteinium. The person who is given credit for discovering an element has the right to name it. Both Soviet and American scientists claimed to have been […]

Atmospheric Pressure

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Atmospheric Pressure The force of air molecules pushing on a surface Also called air pressure or barometric pressure. Air A mixture of gases containing about 78% nitrogen, 20% oxygen, and 2% other gases including carbon dioxide and water vapor. Gas molecules are separate from each other and in constant motion. Words to Know air air pressure […]

Altitude Sickness

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Something to Think About 1. The Dallas Cowboys football team plays the Denver Broncos in Denver. Why does the Dallas football team have problems breathing when they arrive in Denver? Answer: The cowboys are use to the density of the air in Dallas, which is at an altitude of about 500 feet above sea level. […]

Dust Mites

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Question: Where do dust mites live? Answers: Dust mites are microscopic organisms that feed on human dander (dead skin). They thrive in humid, warm environments. The perfect home for dust mites is in your home. They love areas such as carpet, mattresses, pillows, blankets, curtains, and upholstered furniture.In other words, dust mites live where you […]

Air Pressure

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What is air pressure? Pressure is a measure of a force on a specific area of surface. Air pressure is the force of air on an area of surface.This is a good definition, but it doesn’t tell you what’s happening. So here is the nitty gritty about how I understand the cause of air pressure: Air […]