All light has a source, whether it is natural or artificial. Learn about how light is actually energy, and how it helps us see and communicate. Explore different sources of light and whether they are natural or artificial.
This is 1 of 26 leveled readers in STEM Explorations—a series of informational texts that takes young readers through the worlds of natural science and man-made inventions. Explore weather, seasons, and states of matter. Take trips through time with the advance of computers. Learn how to measure time and temperature, how halves and quarters can be used to share, and how sound and light travel.