Landforms

1. Landforms Created by Mrs. Modica’s Third Grade 2008-9

2. Waterfalls By: Emma and Faith Waterfalls are spectacular.

3. A waterfall occurs at a vertical or nearly vertical section of a river channel. Which transforms into rapids. A waterfall is made simply as a result of erosion. Continual erosion of the rock will form and maintain the fall. Falls happen in glacier areas where the main valleys are scoured more deeply then the tributary valleys. Very high waterfalls such as Yosemite Falls generally do not involve large amounts of water but are frequently tourist attractions because of their spectacular beauty.

4. Bay Created by Ashlea and Maci

5. A bay is ocean water that extends into the land. A bay is usually smaller than a gulf. The bay is known as the great salt water by the Indians. Chesapeake Bay, in Maryland and Virginia, is on the Atlantic coast. It is the largest estuary in the United States. The bay is a shipping artery.

6. Rivers and Streams Created by: Braydon and Jacob

7. A stream is a body of water that flows into a lake. It is cool when a stream joins and forms a second order stream. Streams are about 1 mile (1.6 km) in length. In a given region the average volume of water that flows at a given point on a river is directly proportional. The area of land that contributes water to a river network upstream of a given point on a river is called the drainage basin or water shed of the river at that point.

8. Oceans Created by Addison and Nick

9. Oceans are a large body of seawater. Oceans make up 85% of all the water on earth. A neap tide happens when the sun and moon are at right angles to one another. The gravitational pull is not very strong. So these tides are not very high or low. Two sets of spring and neap tides occur each month. The highest ocean waves are caused not by powerful winds but rather by sudden movements in the earth’s crust.

10. River Delta Created by D’Anne and Kieran

11. A river delta is made up of erosion and is carried away by the sediment in the rivers. Most large deltas form in quiet bodies of water by weak coastal currents, low tidal range and low wave energy. Small deltas found in freshwater lakes are generally simple in structure and are irregularly shaped. They are formed by sediment from the river water. Sediment and pollution in the water help create a delta.

12. Gulf Created by J.J. and Nicole

13. A gulf or bay is a body of water that is shaped by a concavity of a coastline and is a re-entrant of a larger body of water. An important distinction can be made between those bays and gulf which are either deeper or shallower than the larger connecting water masses. The Bay of Bengal is larger than the Gulf of Mexico. The Gulf of Guinea has a deep-water connection to the Atlantic Ocean and the deep Gulf of Mexico has a narrow, shallow connection with the Atlantic Ocean at the Straits of Florida. Tides of 5 to 18m (16 to 59 feet) are common in bays with this configuration.

14. The Wetlands Created by Connor D. and Ryan

15. Wetlands are caused by groundwater that come down from the soil and build up on a layer of rock. Wetlands have a water table which goes up and down. Swamps, marshes and bogs are wetlands. The water table is near or above the surface of these bodies of water. Plants in the wetlands have their roots in the water. An example is the water lily. You can find alligators, snakes, fish, frogs, turtles, tadpoles, mosquitoes and dragonflies in the wetlands.