All about light and sound
SoundUltraviolet radiationLight sourcesLightJuvenile literatureLight, juvenile literatureSound, juvenile literature
"Light and sound are two of the most important things in the universe. Without them everything would be dark and silent. Plants and animals would die. What scientists have found out about light and sound helps us live and work"--Provided by publisher.
Writing a summary for young readers…
For young readers
Book data: Open Library