2. Liquid (water) to a Gas Energy comes from the SUN

3. Gas changes to a liquid

4. The water falls back to the Earth as rain, snow, sleet, etc

5. Plants draw in water from the soil through their roots. Eventually the water drawn from the soil is given off through the plant’s leaves as water vapor in a process called transpiration.

6. Water that fills the cracks and spaces in underground soil and rock layers is known as groundwater. Far more fresh water is located underground than in all of the earth’s rivers and lakes. Water trickles down through the spaces between particles of rock and soil.

7. Tributaries – Flow is downward towards the main river due to the force of gravity. All the tributaries together along with the river itself make up a “river-system.”

8. Just as water in a bathtub flows toward the drain, all the water in a river system drains into a main river. Watersheds are also known as: “drainage basins” The land area that supplies water to a river system is called a watershed

11. -Ponds and lakes form when water collects in hollows and low-lying areas of land. Where does water come from? -Rainfall, melting snow/ice, and runoff. Some lakes and ponds are fed by rainfall or even groundwater.

13. 1.) Marsh – are usually grassy areas covered by shallow water or a stream. (ex: Washington State) 2.) Bogs – Are covered with mosses and have acidic water. (often form in depressions left by melting ice sheets, and are found mainly up north in cooler areas) 3.) Swamps – are similar to a flooded forest, containing murky dirty water with moss and many trees sprouting out from the water. (ex: Louisiana Swamp)