Page 55 Homework: Enjoy your break Page 56 Monday, November 23, 2015 Tuesday, November 24, 2015 Modeling River Basins E.Q. – How can you determine how water flows in a river drainage basin? Warm up: You need your drainage basin handout on the legal sheet. COPY THE FALSE STATEMENTS. CHANGE THE UNDERLINED PART TO MAKE THEM TRUE. USE YOUR LAB AS A RESOURCE 1.About three quarters of Earth’s fresh water is in ice near the poles. 2.Most fresh water on earth is in the form of water vapor. 3.Earth’s fresh water is underground, in the ocean, in the atmosphere, in rivers and lakes. Monday, November 23, 2015 Tuesday, November 24, 2015 Parts of a River Drainage Basin Divide Headwaters River Basin Tributary Main River (Channel) Floodplain Mouth

Watersheds are smaller drainage basins within a larger drainage basin.

Watershed or River Basin: The tract of land that supplies water to a river system. People’s actions within a watershed can affect the overall quality of its rivers. Divide: Boundary that marks the outermost limit of a watershed. It is the boundary between one river basin and another river basin. Headwaters: Also called the source. It is the beginning of the river. The headwaters are often located in mountains. Tributary: A smaller stream or river that joins a larger stream or main river Main Channel or Main River: The main river channel is the primary channel and course of a river Floodplain: The floodplain is relatively flat land through which a river flows, which may flood during heavy rain. The soil here is usually very rich and good for growing food. Mouth: The mouth is the place where a river flows into a larger body of water, such as another river, a lake or an ocean

How can you determine how water flows in a river drainage basin? Drawing #1: Predicted Water Flow Within the Model Drawing #2: Map of Water Flow Within the Model

Where Does My Water Flow? Materials: marker, plastic tray, blue and red colored pencils, paper, and tape 1.Crumple the white paper. Unfold the white paper. Do NOT flatten the paper. The paper should have ridges and valleys created by the crumpling process. 2.Place the crumpled paper so that it looks like a relief map with ridges and valleys. 3.Place the paper in the shallow pan. 4.Use a dark colored marker to “highlight” each ridge. 5.Predict where the water will flow on “Drawing #1”. 6.Gently spray the ridges with the water bottle. Continue to spray the ridges until the pattern of flow for the water is evident. 7.Use a blue pencil to draw on “Drawing #2” where you observed bodies of water, such as rivers and lakes forming. Use arrows to indicate the direction of water flow. 8.Look carefully at the blue bodies you drew. Use the red pencil to draw the boundaries of the water shed for each water body you drew on Drawing #2”

Mini lab 1.What types of landforms are represented by the ridges made in the paper? 2.Where do rivers begin? Why do they begin there? 3.What landforms are represented in the valleys made in the paper? 4.Why don’t all rivers flow into the same river basin? 5.Create a flow chart representing the movement of water through a river basin