"For many years people wondered why the moon seemed to change shape. Now we know that the moon isn't changing, but rather what we can see of it is constantly changing. It, too, follows a pattern we see over and over again from month to month. Readers will love learning about the eight phases of the moon and why, even though the sun always lights the moon, we can't always see it!"--Provided by the publisher

"Water is essential for life, but where does it come from? This exciting book dives into that question to explain to readers exactly what happens in the water cycle. From underground springs that feed rivers and lakes to ocean water, it all helps create the clouds that move water particles from place to place. The way water moves around changes the landscape, temperature, and climate all around the world, and readers learn how this much-needed cycle...