Jack-sci

SCIENCE EXPLORATION OF EROSION

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__**

The first ditch helped me learn a few things. First, Mrs. Greenslade made a mimi-mountain. She poured water on it with a hose. There was **erosion** when the water was poured on the mini-mountain. The mini-mountain was like a **dam** to the mini-**lake** forming on the right side of the mountain. On the left side, a **river** was on a **slope.** There were **meanders** in the **river.** There was a lot of **sediment** in the **river.** There were a few **deltas** too. **Deposition** was left after Mrs. Greenslade turned off the hose. There was a **basin** in the mountain. The first ditch was interesting to watch and learn about.

The ditch at the top of the hill was fun to work with. The whole fourth grade got into groups and made **dams**. Five minutes later, Mrs. Greenslade got another hose and sprayed the top of the ditch with water. The current was kind of strong. My groups **dam** didn't hold the water. After the hose was turned off, some of the **dams** looked like they had tiny **canyons** in them. Building the **dams** in the ditch was fun and taught me how **dams** are made.