> The water is rising! The river is spreading into the streets of the > town! It's a flood! > > Rivers often cause floods because of too much rain or the sudden > melting of lots of ice and snow. A...
Where a river meets the sea
What has its head at one end and its mouth at the other end? A river! The place where a river begins is called its head. And the place where it comes to an end, where it flows into a lake or the...
The story of a river
A river may begin as a trickle of melting snow, high on a mountaintop. It may begin as a trickle of underground water, bubbling out from under a rock on a mountainside. The trickle winds down the...
Why the sea is salty
You could be out in the middle of the ocean---surrounded by thousands of miles (kilometers) of water---and not have a drop of water you could drink. For seawater is full of salt. If you did drink it,...
Where the sea pokes into the land
A bay is a place where a tiny bit of the sea, or a lake, pokes into the land. Seen from an airplane, a bay often looks as if a giant had taken a big bite out of the edge of the land and water had...
Where the sea meets the land
Wherever the sea touches land, whether it's the edge of a tiny island or the coast of a continent, there is almost always a beach. A beach is a stretch of sand, pebbles, or mud. The sea makes...
Floating mountains of ice
> an iceberg near Antarctica What is that great, shining shape floating in the cold, gray water of the northern sea? Is it a mountain of snow? Is it an island of ice where the Frost Giants live? Is...
The bottom of the sea
What lies beneath the ocean? What's at the bottom of the deep blue sea? Tall mountains! Great plains! Deep valleys! Volcanoes! The whole outside of the earth is covered with a rocky crust. The...
High tide, low tide
It is early in the misty morning. You are standing on a cliff that overlooks the sea. Gulls soar overhead, calling to one another with shrill cries. Below you, the gray sea crashes against the shore....
The bounding waves
> Stand at the seashore, or a lakeside, on a windy day. Watch the waves > as they rush in toward you. They seem to come rolling at you as if > pushed by a giant hand. With a great hiss and a swirl of...
