what is GIS

Question 1

discrete data

Answer 1

objects in the real world with specific locations or boundaries (vector)

Question 2

continuous data

Answer 2

quantities that can be measured anywhere on earth (raster)

Question 3

georiented data

Answer 3

info is tied to location using standard coordinates used in geospatial software and data

Question 4

feature class

Answer 4

set of similar features stored together, must all be the same type of feature

Question 5

map scale

Answer 5

a measure of the size at which features of a map are represented

Question 6

source scale

Answer 6

original scale or resolution at which data was created or converted to digital form

Question 7

scale range

Answer 7

range of scales for which the display of the data is valid

Question 8

generalization

Answer 8

simplifying data for digital storage, increases as map scale decreases

Question 9

geometric accuracy

Answer 9

how closely the x-y values correspond to the actual location

Question 10

thematic accuracy

Answer 10

refers to attributes in the table, never fully accurate

Question 11

resolution

Answer 11

sampling interval at which data are acquired, spatial, thematic, or temporal

Question 12

precision

Answer 12

number of sigfigs used to record a measurement or statistical variation of of a repeated measurement

Question 13

logical consistency

Answer 13

evaluates if data actually represents real world relationships

Question 14

scene

Answer 14

3D maps

Question 15

geoprocessing history

Answer 15

the project tracks every tool run so you can reference them

Question 16

locators

Answer 16

used to convert street addresses to points on a map

Question 17

contextual ribbons

Answer 17

only appear when appropriate part of the project is selected

Question 18

pane

Answer 18

type of window that contains command settings used to work with the active view

Question 19

geoprocessing

Answer 19

using several tools in sequence to accomplish a task

Question 20

John Snow

Answer 20

found spatial correlation between wells and cholera outbreaks in London in 1854

Question 21

map overlays

Answer 21

developed in early 1900’s at UPenn dep. of landscape architecture

Question 22

symbology

Answer 22

used to communicate geographic info

Question 23

discrete raster

Answer 23

cells have numerical codes that correlate to some categorical value