Lindsey-sci

Think about the two different demonstrations that took place outside this week.


 * First,** explain __what we did__ in the first ditch. Tell about the __landforms you saw being formed__. Explain __how you knew what you were seeing__. (example: A valley was formed because a low place between the two mountains was formed.)


 * Next**, the second paragraph will tell about __what we did__ in the ditch at the top of the hill and __what you learned.__

You will be graded on whether you used all of the vocabulary words correctly and if you followed the directions to form two paragraphs with topic sentences and concluding sentences and had all required information.

Use the following vocabulary in 2 well written paragraphs. Be sure to include an explanation of how you know each of the things you learned. You may type it here or write on a separate sheet of notebook paper. You will have 2 days to work on it before turning it in.
 * erosion sediment meander canyon delta**
 * river basin deposition slope dam lake**

On dirt day, the teachers made a small mountain out of dirt in the first ditch. We were exploring how landforms are formed. Mrs. Greenslade then caused **erosion** by using water to wash away dirt. She did this by using the water hose to make pretend rain fall on top of the mountain. She also used the water hose to make a **basin** and a **canyon**. A **basin** is a low bowl shaped area where water is drained. A **canyon** is a deep valley caused by erosion. As the water washed down the **slope** of the mountain it carried the dirt with it into the **basin**. ** The water and dirt then flowed into the river.**** At a place in the river**** some rocks caught some of the dirt. This looked like a dam**** and a lake**** were being made. Then the dam**** broke and the water flowed on down ****. The river meandered****, or turned slow, and formed a delta**** of dirt. A Deposition**delta **is a fan shaped deposit where a river meets a larger area of water.** occurred as the dirt settled out of the water. When the dirt settled it became **sediment**. It was fun watching the water make landforms.

In the ditch at the top of the hill we learned about dams. The teachers built a bigger mountain of dirt than was in the first ditch. The teachers told us to split into groups of three people and build a **dam**. The **dams** were going to be used to stop the water from flowing down the **slope** to the **river**. The water that is held by the **dam** is a **lake**. We used sticks, logs, leaves, and dirt to build our **dams**. Mrs. Greenslade sprayed water on the mountain and the water flowed down the mountain behind our **dams**. The water made it through all the **dams**, but some **dams** did hold back some of the water forming little **lakes**. Then Mrs. Greenslade had us take apart our **dams** and then she sprayed all the leaves and dirt down the drain. On dirt day I learned a lot about how landforms are made from water and **erosion**. I also learned how **erosion** makes **canyons** and a **delta**. I loved dirt day and learning about landforms.