Experiment one: water erosion

 Question: What happens to land when water flows over it?

Hypothesis: I think water erosion happens, when water erodes earth and carries it down the river.

Materials: Fine sand, rough sand, clay, 3 cups of water, ruler, stream table, beaker.

Procedure: 1. mix fine and rough sand with clay; 2. make the sand flat; 3. put the water in the beaker; 4. wait for the results

Observation: 0:35 forming a little pond; 1:25 the water is starting to go down; 2:30 the water is making a river; 4:00 the water is starting to spit out; 5:00 some of the water fell from the stream table; 6:30 the water stopped.

      

 Conclusion: the water eroded the sand/clay and made a river, but our experiment failed and we need to do better next time.