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Do Now: Assignment 61

7 th grade science. April 27 th. Do Now: Assignment 61. Glue the anticipation guide into your comp book. Read each statement. Mark A for agree, and D for disagree in the left-hand column. 7 th grade science. April 27th. Today’s Schedule. Do-Now Why are they different?

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Do Now: Assignment 61

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  1. 7th grade science April 27th Do Now: Assignment 61 Glue the anticipation guide into your comp book. Read each statement. Mark A for agree, and D for disagree in the left-hand column.

  2. 7th grade science April 27th Today’s Schedule Do-Now Why are they different? Shake-Rattle and Roll, Modeling Weathering of Rocks Analysis questions Dark Matter

  3. 7th grade science April 27th Today we will… 7.8(B)  Analyze the effects of weathering, erosion, and deposition on the environment in ecoregions of Texas. 

  4. Analyze the differences. Why they are so different? Rocky Mountains Appalachian Mountains

  5. 7th grade science April 27th Shake Rattle and Roll Objective: To examine and compare the physical weathering of limestone and granite rocks. Hypothesis: Predict whether or not limestone or granite will experience the most weathering. If___, then___.

  6. 7th grade science April 27th Shake Rattle and Roll Procedure: Place 1 piece of limestone and one piece of granite on your timeline. Make observations in your comp book. Add rocks to the container. Fill container with water. Shake the rocks vigorously for a total of 15 minutes. Remove 1 granite rock and 1 limestone rock every 3 minutes. Place them on your timeline, record observations on your timeline.

  7. 7th grade science April 27th Shake Rattle and Roll

  8. Geological Processes Geo means “Earth” Definition: natural forces that shape the surface of the earth Examples: Plate tectonics, weathering, erosion

  9. Geological Processes Weathering- breaking down of rock over time. • Mechanical weathering-breaking down rock into smaller rocks by water, ice, wind, and organisms. A physical change of rock. • Chemical weathering- breaking down rock through chemical changes. The rock is changed into a new substance with new properties. This is done by oxidation, hydration and carbonation.

  10. 7th grade science April 27th Analysis Questions: Weathering of rock can be described as… There are two different types of weathering… The type of weathering we observed today was ___, because___. Two factors that affect weathering are___ and ___. Which mountain range is older? Please use evidence from the lab to back up your answer. Rocky Mountains • Appalachian Mountains

  11. Analyze the differences. Why they are so different? Rocky Mountains Appalachian Mountains

  12. Rocky Mountains Formed about 70 million years ago.

  13. Appalachian Mountains Began to form about 480 million years ago.

  14. Draw on your lab page: New Mountains. Little to no weathering or erosion. Weathering begins to break up the mountains. Erosion moves the sediments into the valley’s where they are deposited. Millions of years later, the valleys have been completely filled with sediments and land is flat.

  15. 7th grade science April 27th How did we do this? 7.8(B)  Analyze the effects of weathering, erosion, and deposition on the environment in ecoregions of Texas. 

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