Your Guide to Science Fair Topics, Ideas, Experiments, and Winning Displays
Question: How are clouds formed? Answer: Clouds are made of very tiny drops of liquid water called cloud drops or cloud droplets. Cloud droplets stick together to form larger heavier raindrops, which fall to the ground where they collect in puddles, lakes, rivers, and oceans. The water molecules on the surface of collected water (rivers, [...]
Question: Are we running out of water? Answer: Earth is not losing water. The water that dinosaurs drank is still on Earth somewhere. Water moves back and forth between the Earth’s surface and the air in what scientists call a water cycle. When you drink water your body uses it for a time and then [...]
A simple diagram with definitions describing the different forms of water as it moves through the water cycle.
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, [...]
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 [...]
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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