What's the Matter?

Drip-drop!  It’s a rainy day and I know what we can do!  Grab this book and sit inside near a window to wait out the rain. What happens after the rain stops?  Where does all that water go?  Would you believe me if I told you it can change and become invisible? Put on your thinking cap and examine the world around you like a scientist.  I guarantee you will find something new… and pretty amazing!