Everyday Mysteries 6-12
Why is the ocean blue? How do fireworks work? Is a coconut a fruit, nut, or seed? Why do human joints make popping sounds? Is it true that no two snowflakes are alike? Can you really tell the temperature by listening to the chirp of a cricket?Everyday Mysteries—a column from the Library of Congress’s Science Reference Services—answers science-related questions about phenomena seen in daily life.