Chapter 1 Flashcards

what is GIS?

1
Q

geospatial technology

A

overall term for a number of different high tech systems/tools that acquire, analyze, store and visualize location based data

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2
Q

geographical information systems (GIS)

A

computer based mapping, analysis and retrieval of location based data

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3
Q

remote sensing

A

acquisition of data and images from satellites or aircrafts

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4
Q

two types of images involved in remote sensing

A

satellite imagery and aerial photography

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5
Q

satellite imagery

A

digital images of earth from sensors onboard orbiting SPACE platforms

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6
Q

aerial photography

A

images of the ground taken from an airborne platform

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7
Q

what distinguishes satellite photography from aerial photography

A

satellite are photos taken from space

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8
Q

global positioning systems

A

acquisition of real time location information from series of satellites in earth’s orbit

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9
Q

who uses geospatial technology?

A
  1. federal, state and local governments
  2. forestry
  3. law enforcement
  4. public health
  5. biology
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10
Q

what type of work field would use geospatial technology

A

fields that use information or data that has a location associated with it

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11
Q

what distinguishes geospatial technology from other tech fields

A

the handling of geospatial data

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12
Q

geospatial data

A

items that are tied to a specific real world location

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13
Q

what is heart geospatial technological applications

A

geospatial data

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14
Q

when do we use geospatial concepts

A

when wanting to find WHERE something is located OR the data used has a location tied to it

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15
Q

is geospatial data limited to point data (like a restaurant)

A

no - can also be applied to length and dimensions of an area (like the length of a hiking trail)

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16
Q

non-spatial data

A

data that is not directly linked to geospatial locations

17
Q

examples of non-spatial data

A

value of land
occupants of a piece of land
value of a home

18
Q

Benefit of geospatial technology?

A

non-spatial data can be linked to a location

19
Q

what are ways to gather geospatial data

A
  1. remote sensing
  2. satellite imagery
  3. national map
20
Q

what are some decisions that influenced by geospatial information

A

Choosing location for a new building (like a library or school)

(Location should maximize usage but limit impact on nearby sites)

Preservation of historical sites from urban development

(Helps channel preservation efforts to sites under most pressure by urban developments)

21
Q

what does VGI stand for

A

Volunteered geographic information

22
Q

What is VGI

A

term used to describe user generated geospatial content and data

23
Q

what is a wiki

A

database available for everyone to utilize and edit

24
Q

how does wiki extend to geospatial data

A

people can contribute their own maps, images and updates to geospatial content on the internet

25
Q

crowdsourcing

A

untrained volunteers collect data, content or observations as part of a larger project

26
Q

what is a benefit of crowdsourcing

A

allows large number of people to contribute VGI to ongoing projects

27
Q

citizen science

A

activities of untrained volunteers conducting science

28
Q

example of wiki leading to VGI

A

Google maps

  • Users can contribute to the content by adding places, locations, hiking trails and adding road hazards
29
Q

example of citizen science

A

GLOBE project
(People collect pictures on their phones, identify the kind of land cover and post on GLOBE
where GLOBE uses these images for ground reference data in relation to satellite images

30
Q

geolocation

A

technique of determining where something is in the real world

31
Q

example of geolocation

A
  1. latitude and longitude
  2. geotag
32
Q

geotag

A

connect real world location information to an item (like adding a photo online with the location taken assigned)

33
Q

examples of apps using geolocation

A

find my phone
yelp
tinder
google eath

34
Q

what is a virtual globe program using geolocation

A

google earth