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Weathering and Erosion

Investigation 2 – PostLab

 

 

 

 

 

 

 

ANALYZE IT

Note: When you have finished all four Trials, you should have determined the mass of sand found in the container in each Trial. You and your group should then use the data from each Trial in Table A to subtract the mass of the container from the combined masses of the sand and the container.

Complete the Analysis Questions in your SDR then discuss them as a class. 

Note: Compare the data from Trials 1 and 2 in Table A to answer the following questions.

  • In which Trial was more sand eroded by the water?
  • In which Trial was the slope steeper? 
  • What is the relationship between the amount of erosion and the steepness of the slope? 

 

Note: Next, compare the data from Trials 2 and 3 in Table A to answer the following questions.

  • In which Trial was more sand eroded by the water? 
  • In which Trial were there obstacles to the water flow? 
  • What is the relationship between the amount of erosion and obstacles to the flow of water? 
  • Why do you think that obstacles decrease erosion? 

Note: Next, compare the data from Trials 2 and 4 in Table A to answer the following questions.

  • In which Trial was more sand eroded by the water? 
  • In which Trial was there vegetation on the slope? 
  • What is the relationship between the amount of erosion and vegetation on a slope? 
  • Why do you think that vegetation decreases erosion? 
  • What parts of a tree do you think help decrease erosion?

GET FOCUSED

Complete the Focus Questions in your SDR then discuss them as a class. 

  • What occurs when erosion takes place? 
  • What factors increase or decrease erosion?