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Day 17

Day 17. How is angular sand different from rounded sand? (Include picture). Angular sand has sharp edges. Rounded sand is smoother. How is well-sorted sand different from poorly sorted sand? (Include picture).

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Day 17

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  1. Day 17 How is angular sand different from rounded sand? (Include picture) Angular sand has sharp edges. Rounded sand is smoother. How is well-sorted sand different from poorly sorted sand? (Include picture) In well-sorted sand, most of the particles are about the same size. Poorly sorted sand includes particles of all different sizes. (Turn in Lab Pages 21-25 and get Pages 26, 27 & 29)

  2. Stream Table(Part 3) Investigation 4 My Sediments Exactly

  3. Real vs. Diagram Exercise 4.3 3

  4. Label the plastic tray, the sand, andthe dropper in your lab notebook 4

  5. Captions Exercise 4.4 5

  6. What is the purpose of this caption? This portion of the “monster panorama” shows some of the unofficial names given to rocks at the PATHFINDER landing site. Barnacle Bill, Yogi, Scooby Doo, and Lamb have been investigated by the Sojourner rover and its alpha proton X-ray spectrometer. Couch is a large rock on the horizon. The names are used by the Pathfinder team to help identify and keep track of the many rocks at the landing site. 6

  7. Look at the bottom image on page 37 7

  8. Models What is a model? A representation of something that is difficult to observe directly: • an object or system that is very large, very small, or remote in time and space • a process that happens very slowly or quickly • a process or system that is dangerous or costly

  9. Called a stream table Represents the Colorado Plateau and the Colorado River Today's Model

  10. Stream Table Vocabulary Erosion -- the removal and transportation of loose earth material Deposition -- the settling out of eroded earth material Sediments -- the particles of earth material that settled out of the water

  11. Station Assignments Station 1: Stream Table • Observe the stream table and record observations on Lab p. 26&27. (Use RBV2 page 110 to include 9+ vocab.) Station 2: Multimedia Stream Table • Pick 2 of the 3 given variables to test. • (Divide p. 29 in 1/2, explain everything.) Station 3: Resources Book Reading • Read Grand Canyon Flood! (RBV2) (Pages 12-15 & Think Questions in Notebook, label, use complete sent.)

  12. Discuss Observations What were some landforms that were created in the stream table? canyon, delta, meander, plateau What happened to the different-sized particles that were eroded by the water? The smaller, finer particles were carried farther downstream.

  13. Discuss Observations What would happen to the earth material if we let the water run for several days? It might completely erode away. In the multimedia stream table, why didn't the bottom layer erode as quickly as the top? The middle layer of clay protected it.

  14. Day 17.5/Essay Question What is a fossil? Why are igneous and metamorphic rocks not good for finding fossils? A fossil is a remnant or trace of a plant or animal embedded and preserved in a rock. Igneous rocks form when molten rock cools and hardens. Molten rock is much too hot to preserve fossils. Metamorphic rocks form when an existing rock changes because of heat and/or pressure, which will usually destroy any fossils in the original rock. (Take out Lab pages 26, 27 & 29)

  15. Station Assignments Station 1: Stream Table • Observe the stream table and record observations on Lab p. 26&27. (Use RBV2 page 110 to include 9+ vocab.) Station 2: Multimedia Stream Table • Pick 2 of the 3 given variables to test. • (Divide p. 29 in 1/2, explain everything.) Station 3: Resources Book Reading • Read Grand Canyon Flood! (RBV2) (Pages 12-15 & Think Questions in Notebook, label, use complete sent.)

  16. Bellwork Take out your review guide for Earth History Quiz # 3 and science notebook, and work on completing it in your science notebook or separate sheet of paper. Then take out Lab Pages 21-25 and 26-29.

  17. Discuss Observations What were some landforms that were created in the stream table? canyon, delta, meander, plateau What happened to the different-sized particles that were eroded by the water? The smaller, finer particles were carried farther downstream.

  18. Discuss Observations What would happen to the earth material if we let the water run for several days? It might completely erode away. In the multimedia stream table, why didn't the bottom layer erode as quickly as the top? The middle layer of clay protected it.

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