1. Changes to Earth’s Surface Unit Week 25 Directions 1.Prepare your desk for science. Science notebook 2.Use voice level 0 (no voice) to draw pictures that illustrate weathering, erosion, and deposition for your landforms.

2. Display Board Questions? You must type most, if not all, of your display board!

3. Targets & Warm Up Targets: Students will observe causes and effects of changes to Earth’s surface. Warm Up: Share landform paragraphs

4. Stations StationWeathering or Erosion? 1Chemical Weathering 2Wind Erosion 3Glacial Erosion 4Physical Weathering 5Water Erosion of Soil 6Water/Wave Erosion of Sand If you finish the activity and carefully answer the questions for the station that you are at… 1.Finish answering questions from previous stations you have already visited 2.Word search

5. Station Directions 1.Read through the directions as a group. 2.Read through the questions for your station. 3.Do the activity & answer the questions.

6. Station 1: Chemical Weathering 1.Put one small piece of chalk in each cup. 2.Measure and pour 10 mL of water into the cup labeled “W”. 3.Measure and pour 10 mL of vinegar into the cup labeled “V”. 4.Wait for one minute. Make observations of what happens to the surfaces of the chalk in each cup. If you need to take a closer look, you may use the spoon to lift the pieces of chalk out of the cups. 5.Answer any extra questions. Clean up: Throw away the used chalk pieces. Pour out the water and vinegar cups.

7. Station 2: Wind Erosion 1.Put on the safety goggles. 2.Form a small pile of sand in the center of the box. 3.Lightly blow at one end of the pile from the open end of the box. Make and record observations. 4.Reform the small pile of sand in the center of the box. 5.Use the hair dryer (on the low setting) to blow at one end of the pile from the open end of the box. Make and record observations 6.Reform the small pile of sand in the center of the box. 7.Use the hair dryer (on the high setting) to blow at one end of the pile from the open end of the box. Make and record observations. 8.Answer any extra questions. Clean up: Pour the sand back into its container. Unplug the hair dryer. Neatly pile the safety goggles.

8. Station 3: Glacial Erosion 1.Shape the modeling clay into a flat rectangle. 2.Press the ice cube on the flat surface of the clay. Move it back and forth several times. Make and record observations. 3.Place a small pile of sand on the clay. Place the ice cube on top of the sand. Press and move it back and forth several times. Remove the ice cube and gently brush the sand off the clay. Make and record observations. Clean up: Wipe sand off of the clay. Put the sand back into its container. Ask Miss Pien where to put the ice cube.

9. Station 4: Physical Weathering 1.Put 3 sugar cubes and a small handful of gravel into a jar with a lid. 2.The sugar cubes represent a softer type of rock. 3.The gravel represents a harder type of rock. 4.Set the timer. 5.Shake the jar for 5 minutes. 6.Make and record observations about what happens to the sugar cubes (softer rocks). 7.Answer extra questions. Clean up: Put the gravel back into its container. Throw out the sugar. Wipe the inside of the jar with a paper towel.

10. Station 5: Water Erosion of Soil 1.Place a pile of 3 textbooks under one end of the pan. 2.Spread the soil evenly at the bottom of the pan. 3.Pour one cup of water down the hill. Make and record observations. Use more water if necessary, but ask Miss Pien first. 4.Answer extra questions. Clean up: See Miss Pien Wash your hands!

11. Station 6: Water/Wave Erosion of Sand 1.Pour sand into the pan. Make a sand pile at one end to make a beach. 2.Pour water into the pan. 3.Slide the pan back and forth to create a wave motion. 4.Make and record observations. 5.Answer extra questions. Clean up: See Miss Pien

12. Targets (Revisited) Students will describe causes and effects of changes to Earth’s surface.

13. Homework SubjectHomeworkDue Date ScienceAnalysisMonday 3/23 ScienceDisplay BoardMonday 3/30