Where Does Salt Come From?
Salt comes from lakes, wells, underground mines, and from the sea. Most of the salt that we sprinkle on our food is mined from thick salt beds, or large layers, deep in...
Read More
How Do Butterflies Get Their Color?
How Do Butterflies Get Their Color? The colorful patterns on a butterfly’s wings are formed by thousands of flat scales as fine as dust. The tiny scales overlap each...
Read More
What Is a Solar Panel?
What Is a Solar Panel? A solar panel consists of a group of photovoltaic cells linked together. As their name suggests, these cells convert light (“photo”)...
Read More
Why Does the Road Look Wet on a Hot Summer Day?
Why Does the Road Look Wet on a Hot Summer Day? On a hot summer day, while driving along the highway, you may see something that looks like a pool of water ahead of you...
Read More
How Do Glaciers Form?
A glacier is a great river of ice that moves slowly down a mountain. Glaciers form in high mountain valleys, where summers are so cold that most of the winter snow...
Read More