UMGC ENMT307 2021 July Week 3 Assessment Latest

ENMT307 Introduction to Geographic Information Systems (GIS)

Week 3 Assessment  

Choose the data

Directions:  Read the questions and type your answers below each question.  It is recommended that you pencil in a note in the appropriate location in your Understanding GIS workbook as a reminder for questions that mention page number and step number.  Make sure your responses are clearly written with no spelling or grammatical errors.  Also, make sure your answers are given in a font color or altered font size to clearly distinguish your inputs for each set of questions.Be sure to save your file as Lesson3Assessment_lastname.docx (ex: Lesson3Assessment_Smith.docx).  Point values are in parentheses.

Lesson 3: Exercise 3a

QUESTION 1:Explain how you got only the Los Angeles River to display in apatite blue and all other rivers in the River feature class to not display.  (5)

QUESTION 2:  What is the difference between the LARiver layer extent and the Los Angeles River in theRiverfeature classextent on page 102-103?  (5)

QUESTION 3:  After you finish page 103, #7, then hit the Print Screen (prt sc) button on your keyboard (make sure your ArcGIS window is maximized – your screen should look like the image on page 102).  Place your cursor in the space below this question and hit Ctrl-V to paste the screen view into this document.  (5)

QUESTION 4:  Which on the two park layers is better on page 107?  Explain why.  (5)

QUESTION 5:After you finish page 107, #12 (with the Parkland layer turned on), then hit the Print Screen (prt sc) button on your keyboard (make sure your ArcGIS window is maximized).  Place your cursor in the space below this question and hit Ctrl-V to paste the screen view into this document.  (5)

QUESTION 6:  a) Which of the two park layers only displays parks within the Los Angeles city limits?  (2)

b)  Is this good or bad for our analysis?  Explain.  (3)

QUESTION 7:After you finish page 109, #5 (with the NewParks layer turned on), then hit the Print Screen (prt sc) button on your keyboard (make sure your ArcGIS window is maximized – your screen should look like the image on the bottom of page 108).  Place your cursor in the space below this question and hit Ctrl-V to paste the screen view into this document.  (5)

QUESTION 8:  Don’t forget to turn in your updated and completed DataRequirementsTable.doc for grading.  Attach it as a separate file.  (20)

Lesson 3: Exercise 3b

QUESTION 9:What is a coordinate system and why is it important?(5)

QUESTION 10:What does it mean to project “on-the-fly”?  (5)

QUESTION 11:  What are the two different ways you found the coordinate system information for the State layer on pages 115-117?  (5)

QUESTION 12:  After you finish page 121, #10 (with the Lesson3b Web Mercatormap open), then hit the Print Screen (prt sc) button on your keyboard (make sure your ArcGIS window is maximized – your screen should look like theimage on page 121).  Place your cursor in the space below this question and hit Ctrl-V to paste the screen view into this document.  (10)

QUESTION 13:  Explain how the Mercator projection distorts the state of Alaska on page 122 and 123.  (5)

QUESTION 14:After you finish page 127, #3, then hit the Print Screen (prt sc) button on your keyboard (make sure your ArcGIS window is maximized – your screen should look like the image on page 128).  Place your cursor in the space below this question and hit Ctrl-V to paste the screen view into this document.  (10)

QUESTION 15:What three things help to define a geographic coordinate system?  (5)