Part 1: Pre-Lab Questions 1. How do rivers shape landscapes over time? __ __ and 3. How do human activities, such as deforestation and urban development, affect river systems? __ 4. Predict what will happen when water flows through your stream table. What landforms might form? __

## Step 1<br />Rivers shape landscapes over time through a process called erosion. Erosion is the process by which soil and rock are removed from the Earth's surface by exogenetic processes such as wind or water flow, and then transported and deposited in other locations. Rivers erode the land around them, carving out valleys and shaping the landscape.<br /><br />## Step 2<br />Human activities, such as deforestation and urban development, can have a significant impact on river systems. Deforestation can lead to increased runoff into rivers, which can cause erosion and flooding. Urban development can lead to the construction of dams and other structures that can alter the natural flow of rivers, leading to changes in the river's ecosystem.<br /><br />## Step 3<br />When water flows through a stream table, it can form various landforms depending on the speed and volume of the water. These landforms can include valleys, hills, and plains. The speed and volume of the water can also influence the type of sediment that is deposited, which can lead to the formation of different types of landforms.