VanCleave's Science Fun

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

Archives for 2010

Types of Ultraviolet Radiation

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What is the difference between UVA, UVB, and UVC? Answer: UV-A= Aging. This UV radiation can penetrate and damage the cell. About 98% of the UV radiation reaching Earth’s surface is UV-A. UV-B= Burning. This UV radiation is mainly what causes sunburns. Most of the radiation is absorbed in by the ozone layer in Earth’s […]

States of Matter: Solid

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Matter exists naturally in four states. These states in order of energy from least energy to greatest energy are: Solid Liquid Gas Plasma A SOLID is the state of mater with the least amount of energy and the most structure. Solids exits in two basic forms: 1. Crystalline solids are those in which the particles […]

Snowflakes

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Six-Sided Snowflake Models The snow flake to the right gives the basic design of a six-sided snowflake. You can be as creative as you dare in making snowflake models. Just be sure they have six major sides. A paper snowflake can be cut from a round paper coffee filter. The procedure for folding and cutting […]

Moon Phases

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The Moon is the largest and brightest object in the night sky. It is also one of the most observed celestial body. Even so most children and adults have little knowledge about it. They know that the lighted part changes shapes and most know that it happens every month. But few know why. The Moon […]

How to Date Eggs

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The older an egg is the more buoyant it is in water. Buoyancy is the ability of an object to float in a fluid (liquid or gas). For example, helium balloons are buoyant in air and boats are buoyant in water. To test the freshness of an egg, fill a bowl with water. Then place […]

Acid/Base Indicators

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Indicators Acid Indicators are  materials that change color in an acid solution. Base Indicators are materials that change color in  a base solution. Acid/Base Indicators are materials that have one color when mixed with an acid and another color when mixed with a base. Red Cabbage Juice is an acid/base Indicator. The juice has a […]

Insect Proboscis

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Fly Straws Flies don’t chew their food like we do. Instead they drink their food through a straw-like mouth part called a proboscis. We don’t have to drink our food, but sometimes it is fun, especially if you have fun straws. Drinking liquids through a straw is easy, but if the food is very thick […]

Variables For Making Rock Candy

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A Science Fair Project is a cause/effect investigation. The cause is called an independent variable (something you purposely change). Changes in the independent variable affects another variable called the dependent variable. You AFFECT the investigation by making changes in the independent variable. The objective of the investigation is to measure the EFFECT that this change […]