Your Guide to Science Fair Topics, Ideas, Experiments, and Winning Displays
Hi, I feel like dancing. My indexes are looking better. Not sure what I did wrong, but earlier nothing would open. I’ve made lots of corrections, so please refresh pages. I am checking each link—I hope to have everything in better order tomorrow—oops! I think it is already tomorrow. This has been a very long [...]
Summer solstice is the first day of summer each year and it occurs around June 21st in the Northern Hemisphere(December 21st in the Southern Hemisphere). The winter solstice is the first day of winter and occurs around December 21 in the Northern Hemisphere. (June 21 in the Southern Hemisphere). Starting at winter solstice to summer [...]
You can easily describe and/or calculate the density of substances if you understand that density is nothing more than a ratio comparing two quantities. The things being counted may vary but all densities are ratios that compare the quantity of a substance in a specific volume (or area). Densities can be demonstrated using paperclips and [...]
Wind is moving air. Gravity is a force directed perpendicular to Earth’s surface. In other words, gravity pulls things straight down (vertically) toward Earth’s surface. The mass of an object directly affects the amount of gravity acting on it. The greater the mass the greater is the force of gravity. For wind to move an [...]
Sedimentary rock are layers of sediments cemented together.The basic steps of this process are: Deposition of sediment. The transfer of sediments (soil particles) from one place to another causing layers after layer to form. Compaction of sediment. The squeezing together of sediments. Cementing sediment. The gluing together of sediments. During compaction the air and water [...]
An easy way to model the formation of sedimentary rock by the processes of deposition and compaction.
Density is an indication of how densely packed a material is. For example, if there are two equal size jars and each is filled with 40 balls. With only this information, you might predict that the density of the balls in both jars is the same. When you measure the mass of the two jars [...]
In the world around us there are many examples of vortexes: tornadoes, whirlpools in a sink or tub, swirling vortexes in rivers and oceans and, of course, hurricanes. You can make your own vortex to do experiments with. For this you will need two empty plastic soda bottles (with the labels removed), duct tape, and [...]
Demonstrate the Water Cycle. 1. Fold a paper towel in half twice. 2. Lay the folded paper towel on a table and stand a glass on it. The glass must be large large enough to support a 16-ounce (480-ml) plastic soda or water bottle as shown. 3. Fill the bottle half full with warm tap [...]
How do raindrop form? One way that rain drops form is called accretion. This is the process by which cloud droplets (very tiny drops of liquid water forming clouds) combine forming larger drops. This happen when the drops bump into each as well as when they get very near each other. Water molecules have an [...]
ABOUT ME: Hi, I am Janice VanCleave, author of 50 best-selling science experiment books for children ages 4 through high school. I taught science for 27 years.
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