*** Study all vocabulary on the back of this sheet*** Can you answer these questions?? 1. What is the water that flows over the surface of land called? 2. What is the lower level where all the pores are filled with water called? 3. What is the waterproof box we use in that contains sand, gravel, and soil and has a water source called? 4. What is the upper layer of soil where the pores contain air and water called? 5. What is a stream where it starts called? 6. What are natural features on the Earth’s surface? 7. Why it is not safe to drink water from a pond or a stream? 8. Describe how the velocity (speed) of water affects erosion? What are the four components of land? Which soil component is easy to erode, and why? What soil component is harder to erode, and why?