Your Guide to Science Fair Topics, Ideas, Experiments, and Winning Displays
What is Matter? Matter is anything that has mass and takes up space, such as water. The photo shows water first falling and filling and collecting at the bottom of the waterfall. When the collected water increases in volume, the water spills over a rock boundary. Water takes up space. Volume is the amount of [...]
Why Do Some Heavy Objects Float and Other Heavy Objects Sink? New Terms buoyancy buoyant force density displacement fluid volume Whether an object sinks or floats in a fluid (liquid or gas), depends on several variables: 1. The density of the object in a fluid. (Density is the ratio of the object’s mass [...]
What is Newton’s First Law of Motion? Newton’s first law of motion is about inertia. While this might sound technical, it’s not. Inertia is a characteristic of an object’s state of motion. Well, this doesn’t sound very easy, so let me try again. Actually, I am writing this so that a special technical reviewer, [...]
Gravity is a force between materials. The greater the mass, the greater the force of gravity, so things that have a lot of mass, such as the planet Earth, pulls things with less mass, such as a chunk of rock, to its surface. As shown in the diagram, the winner of the gravity tug-of-war between [...]
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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